20979420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:288

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56434980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 19, 20, 21, 22, 28, 30, 33, 35, 38, 42, 44, 55, 57, 60, 66, 70, 76, 77, 84, 95, 105, 110, 114, 132, 133, 140, 154, 165, 190, 209, 210, 220, 228, 231, 239, 266, 285, 308, 330, 380, 385, 399, 418, 420, 462, 478, 532, 570, 627, 660, 665, 717, 770, 798, 836, 924, 956, 1045, 1140, 1155, 1195, 1254, 1330, 1434, 1463, 1540, 1596, 1673, 1995, 2090, 2310, 2390, 2508, 2629, 2660, 2868, 2926, 3135, 3346, 3585, 3990, 4180, 4389, 4541, 4620, 4780, 5019, 5258, 5852, 6270, 6692, 7170, 7315, 7887, 7980, 8365, 8778, 9082, 10038, 10516, 12540, 13145, 13623, 14340, 14630, 15774, 16730, 17556, 18164, 18403, 20076, 21945, 22705, 25095, 26290, 27246, 29260, 31548, 31787, 33460, 36806, 39435, 43890, 45410, 49951, 50190, 52580, 54492, 55209, 63574, 68115, 73612, 78870, 87780, 90820, 92015, 95361, 99902, 100380, 110418, 127148, 136230, 149853, 157740, 158935, 184030, 190722, 199804, 220836, 249755, 272460, 276045, 299706, 317870, 349657, 368060, 381444, 476805, 499510, 552090, 599412, 635740, 699314, 749265, 953610, 999020, 1048971, 1104180, 1398628, 1498530, 1748285, 1907220, 2097942, 2997060, 3496570, 4195884, 5244855, 6993140, 10489710, 20979420]

約数ペア:

[(1, 20979420), (2, 10489710), (3, 6993140), (4, 5244855), (5, 4195884), (6, 3496570), (7, 2997060), (10, 2097942), (11, 1907220), (12, 1748285), (14, 1498530), (15, 1398628), (19, 1104180), (20, 1048971), (21, 999020), (22, 953610), (28, 749265), (30, 699314), (33, 635740), (35, 599412), (38, 552090), (42, 499510), (44, 476805), (55, 381444), (57, 368060), (60, 349657), (66, 317870), (70, 299706), (76, 276045), (77, 272460), (84, 249755), (95, 220836), (105, 199804), (110, 190722), (114, 184030), (132, 158935), (133, 157740), (140, 149853), (154, 136230), (165, 127148), (190, 110418), (209, 100380), (210, 99902), (220, 95361), (228, 92015), (231, 90820), (239, 87780), (266, 78870), (285, 73612), (308, 68115), (330, 63574), (380, 55209), (385, 54492), (399, 52580), (418, 50190), (420, 49951), (462, 45410), (478, 43890), (532, 39435), (570, 36806), (627, 33460), (660, 31787), (665, 31548), (717, 29260), (770, 27246), (798, 26290), (836, 25095), (924, 22705), (956, 21945), (1045, 20076), (1140, 18403), (1155, 18164), (1195, 17556), (1254, 16730), (1330, 15774), (1434, 14630), (1463, 14340), (1540, 13623), (1596, 13145), (1673, 12540), (1995, 10516), (2090, 10038), (2310, 9082), (2390, 8778), (2508, 8365), (2629, 7980), (2660, 7887), (2868, 7315), (2926, 7170), (3135, 6692), (3346, 6270), (3585, 5852), (3990, 5258), (4180, 5019), (4389, 4780), (4541, 4620)]