21651588

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{569}}^1$

素因数の和:737

約数の個数: 72

約数和(自身を含む): 63073920

約数和(自身を除く): 41422332

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 151, 252, 302, 453, 569, 604, 906, 1057, 1138, 1359, 1707, 1812, 2114, 2276, 2718, 3171, 3414, 3983, 4228, 5121, 5436, 6342, 6828, 7966, 9513, 10242, 11949, 12684, 15932, 19026, 20484, 23898, 35847, 38052, 47796, 71694, 85919, 143388, 171838, 257757, 343676, 515514, 601433, 773271, 1031028, 1202866, 1546542, 1804299, 2405732, 3093084, 3608598, 5412897, 7217196, 10825794, 21651588]

約数ペア:

[(1, 21651588), (2, 10825794), (3, 7217196), (4, 5412897), (6, 3608598), (7, 3093084), (9, 2405732), (12, 1804299), (14, 1546542), (18, 1202866), (21, 1031028), (28, 773271), (36, 601433), (42, 515514), (63, 343676), (84, 257757), (126, 171838), (151, 143388), (252, 85919), (302, 71694), (453, 47796), (569, 38052), (604, 35847), (906, 23898), (1057, 20484), (1138, 19026), (1359, 15932), (1707, 12684), (1812, 11949), (2114, 10242), (2276, 9513), (2718, 7966), (3171, 6828), (3414, 6342), (3983, 5436), (4228, 5121)]