28693940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 67568256

約数和(自身を除く): 38874316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 121, 142, 167, 220, 242, 284, 334, 355, 484, 605, 668, 710, 781, 835, 1210, 1420, 1562, 1670, 1837, 2420, 3124, 3340, 3674, 3905, 7348, 7810, 8591, 9185, 11857, 15620, 17182, 18370, 20207, 23714, 34364, 36740, 40414, 42955, 47428, 59285, 80828, 85910, 101035, 118570, 130427, 171820, 202070, 237140, 260854, 404140, 521708, 652135, 1304270, 1434697, 2608540, 2869394, 5738788, 7173485, 14346970, 28693940]

約数ペア:

[(1, 28693940), (2, 14346970), (4, 7173485), (5, 5738788), (10, 2869394), (11, 2608540), (20, 1434697), (22, 1304270), (44, 652135), (55, 521708), (71, 404140), (110, 260854), (121, 237140), (142, 202070), (167, 171820), (220, 130427), (242, 118570), (284, 101035), (334, 85910), (355, 80828), (484, 59285), (605, 47428), (668, 42955), (710, 40414), (781, 36740), (835, 34364), (1210, 23714), (1420, 20207), (1562, 18370), (1670, 17182), (1837, 15620), (2420, 11857), (3124, 9185), (3340, 8591), (3674, 7810), (3905, 7348)]