20949780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:118

約数の個数: 192

約数和(自身を含む): 69672960

約数和(自身を除く): 48723180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 19, 20, 23, 30, 34, 38, 46, 47, 51, 57, 60, 68, 69, 76, 85, 92, 94, 95, 102, 114, 115, 138, 141, 170, 188, 190, 204, 228, 230, 235, 255, 276, 282, 285, 323, 340, 345, 380, 391, 437, 460, 470, 510, 564, 570, 646, 690, 705, 782, 799, 874, 893, 940, 969, 1020, 1081, 1140, 1173, 1292, 1311, 1380, 1410, 1564, 1598, 1615, 1748, 1786, 1938, 1955, 2162, 2185, 2346, 2397, 2622, 2679, 2820, 3196, 3230, 3243, 3572, 3876, 3910, 3995, 4324, 4370, 4465, 4692, 4794, 4845, 5244, 5358, 5405, 5865, 6460, 6486, 6555, 7429, 7820, 7990, 8740, 8930, 9588, 9690, 10716, 10810, 11730, 11985, 12972, 13110, 13395, 14858, 15181, 15980, 16215, 17860, 18377, 19380, 20539, 21620, 22287, 23460, 23970, 26220, 26790, 29716, 30362, 32430, 36754, 37145, 41078, 44574, 45543, 47940, 53580, 55131, 60724, 61617, 64860, 73508, 74290, 75905, 82156, 89148, 91086, 91885, 102695, 110262, 111435, 123234, 148580, 151810, 182172, 183770, 205390, 220524, 222870, 227715, 246468, 275655, 303620, 308085, 349163, 367540, 410780, 445740, 455430, 551310, 616170, 698326, 910860, 1047489, 1102620, 1232340, 1396652, 1745815, 2094978, 3491630, 4189956, 5237445, 6983260, 10474890, 20949780]

約数ペア:

[(1, 20949780), (2, 10474890), (3, 6983260), (4, 5237445), (5, 4189956), (6, 3491630), (10, 2094978), (12, 1745815), (15, 1396652), (17, 1232340), (19, 1102620), (20, 1047489), (23, 910860), (30, 698326), (34, 616170), (38, 551310), (46, 455430), (47, 445740), (51, 410780), (57, 367540), (60, 349163), (68, 308085), (69, 303620), (76, 275655), (85, 246468), (92, 227715), (94, 222870), (95, 220524), (102, 205390), (114, 183770), (115, 182172), (138, 151810), (141, 148580), (170, 123234), (188, 111435), (190, 110262), (204, 102695), (228, 91885), (230, 91086), (235, 89148), (255, 82156), (276, 75905), (282, 74290), (285, 73508), (323, 64860), (340, 61617), (345, 60724), (380, 55131), (391, 53580), (437, 47940), (460, 45543), (470, 44574), (510, 41078), (564, 37145), (570, 36754), (646, 32430), (690, 30362), (705, 29716), (782, 26790), (799, 26220), (874, 23970), (893, 23460), (940, 22287), (969, 21620), (1020, 20539), (1081, 19380), (1140, 18377), (1173, 17860), (1292, 16215), (1311, 15980), (1380, 15181), (1410, 14858), (1564, 13395), (1598, 13110), (1615, 12972), (1748, 11985), (1786, 11730), (1938, 10810), (1955, 10716), (2162, 9690), (2185, 9588), (2346, 8930), (2397, 8740), (2622, 7990), (2679, 7820), (2820, 7429), (3196, 6555), (3230, 6486), (3243, 6460), (3572, 5865), (3876, 5405), (3910, 5358), (3995, 5244), (4324, 4845), (4370, 4794), (4465, 4692)]