21857220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:135

約数の個数: 288

約数和(自身を含む): 88058880

約数和(自身を除く): 66201660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 19, 20, 21, 22, 28, 30, 33, 35, 36, 38, 42, 44, 45, 55, 57, 60, 63, 66, 70, 76, 77, 83, 84, 90, 95, 99, 105, 110, 114, 126, 132, 133, 140, 154, 165, 166, 171, 180, 190, 198, 209, 210, 220, 228, 231, 249, 252, 266, 285, 308, 315, 330, 332, 342, 380, 385, 396, 399, 415, 418, 420, 462, 495, 498, 532, 570, 581, 627, 630, 660, 665, 684, 693, 747, 770, 798, 830, 836, 855, 913, 924, 990, 996, 1045, 1140, 1155, 1162, 1197, 1245, 1254, 1260, 1330, 1386, 1463, 1494, 1540, 1577, 1596, 1660, 1710, 1743, 1826, 1881, 1980, 1995, 2090, 2310, 2324, 2394, 2490, 2508, 2660, 2739, 2772, 2905, 2926, 2988, 3135, 3154, 3420, 3465, 3486, 3652, 3735, 3762, 3990, 4180, 4389, 4565, 4620, 4731, 4788, 4980, 5229, 5478, 5810, 5852, 5985, 6270, 6308, 6391, 6930, 6972, 7315, 7470, 7524, 7885, 7980, 8217, 8715, 8778, 9130, 9405, 9462, 10458, 10956, 11039, 11620, 11970, 12540, 12782, 13167, 13695, 13860, 14193, 14630, 14940, 15770, 16434, 17347, 17430, 17556, 18260, 18810, 18924, 19173, 20916, 21945, 22078, 23655, 23940, 25564, 26145, 26334, 27390, 28386, 29260, 31540, 31955, 32868, 33117, 34694, 34860, 37620, 38346, 41085, 43890, 44156, 47310, 52041, 52290, 52668, 54780, 55195, 56772, 57519, 63910, 65835, 66234, 69388, 70965, 76692, 82170, 86735, 87780, 94620, 95865, 99351, 104082, 104580, 110390, 115038, 121429, 127820, 131670, 132468, 141930, 156123, 164340, 165585, 173470, 191730, 198702, 208164, 220780, 230076, 242858, 260205, 263340, 283860, 287595, 312246, 331170, 346940, 364287, 383460, 397404, 485716, 496755, 520410, 575190, 607145, 624492, 662340, 728574, 780615, 993510, 1040820, 1092861, 1150380, 1214290, 1457148, 1561230, 1821435, 1987020, 2185722, 2428580, 3122460, 3642870, 4371444, 5464305, 7285740, 10928610, 21857220]

約数ペア:

[(1, 21857220), (2, 10928610), (3, 7285740), (4, 5464305), (5, 4371444), (6, 3642870), (7, 3122460), (9, 2428580), (10, 2185722), (11, 1987020), (12, 1821435), (14, 1561230), (15, 1457148), (18, 1214290), (19, 1150380), (20, 1092861), (21, 1040820), (22, 993510), (28, 780615), (30, 728574), (33, 662340), (35, 624492), (36, 607145), (38, 575190), (42, 520410), (44, 496755), (45, 485716), (55, 397404), (57, 383460), (60, 364287), (63, 346940), (66, 331170), (70, 312246), (76, 287595), (77, 283860), (83, 263340), (84, 260205), (90, 242858), (95, 230076), (99, 220780), (105, 208164), (110, 198702), (114, 191730), (126, 173470), (132, 165585), (133, 164340), (140, 156123), (154, 141930), (165, 132468), (166, 131670), (171, 127820), (180, 121429), (190, 115038), (198, 110390), (209, 104580), (210, 104082), (220, 99351), (228, 95865), (231, 94620), (249, 87780), (252, 86735), (266, 82170), (285, 76692), (308, 70965), (315, 69388), (330, 66234), (332, 65835), (342, 63910), (380, 57519), (385, 56772), (396, 55195), (399, 54780), (415, 52668), (418, 52290), (420, 52041), (462, 47310), (495, 44156), (498, 43890), (532, 41085), (570, 38346), (581, 37620), (627, 34860), (630, 34694), (660, 33117), (665, 32868), (684, 31955), (693, 31540), (747, 29260), (770, 28386), (798, 27390), (830, 26334), (836, 26145), (855, 25564), (913, 23940), (924, 23655), (990, 22078), (996, 21945), (1045, 20916), (1140, 19173), (1155, 18924), (1162, 18810), (1197, 18260), (1245, 17556), (1254, 17430), (1260, 17347), (1330, 16434), (1386, 15770), (1463, 14940), (1494, 14630), (1540, 14193), (1577, 13860), (1596, 13695), (1660, 13167), (1710, 12782), (1743, 12540), (1826, 11970), (1881, 11620), (1980, 11039), (1995, 10956), (2090, 10458), (2310, 9462), (2324, 9405), (2394, 9130), (2490, 8778), (2508, 8715), (2660, 8217), (2739, 7980), (2772, 7885), (2905, 7524), (2926, 7470), (2988, 7315), (3135, 6972), (3154, 6930), (3420, 6391), (3465, 6308), (3486, 6270), (3652, 5985), (3735, 5852), (3762, 5810), (3990, 5478), (4180, 5229), (4389, 4980), (4565, 4788), (4620, 4731)]