21172740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{5981}}^1$

素因数の和:6052

約数の個数: 48

約数和(自身を含む): 60298560

約数和(自身を除く): 39125820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 59, 60, 118, 177, 236, 295, 354, 590, 708, 885, 1180, 1770, 3540, 5981, 11962, 17943, 23924, 29905, 35886, 59810, 71772, 89715, 119620, 179430, 352879, 358860, 705758, 1058637, 1411516, 1764395, 2117274, 3528790, 4234548, 5293185, 7057580, 10586370, 21172740]

約数ペア:

[(1, 21172740), (2, 10586370), (3, 7057580), (4, 5293185), (5, 4234548), (6, 3528790), (10, 2117274), (12, 1764395), (15, 1411516), (20, 1058637), (30, 705758), (59, 358860), (60, 352879), (118, 179430), (177, 119620), (236, 89715), (295, 71772), (354, 59810), (590, 35886), (708, 29905), (885, 23924), (1180, 17943), (1770, 11962), (3540, 5981)]