21954318620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{371981}}^1$

素因数の和:372230

約数の個数: 48

約数和(自身を含む): 49869394848

約数和(自身を除く): 27915076228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 227, 260, 454, 908, 1135, 2270, 2951, 4540, 5902, 11804, 14755, 29510, 59020, 371981, 743962, 1487924, 1859905, 3719810, 4835753, 7439620, 9671506, 19343012, 24178765, 48357530, 84439687, 96715060, 168879374, 337758748, 422198435, 844396870, 1097715931, 1688793740, 2195431862, 4390863724, 5488579655, 10977159310, 21954318620]

約数ペア:

[(1, 21954318620), (2, 10977159310), (4, 5488579655), (5, 4390863724), (10, 2195431862), (13, 1688793740), (20, 1097715931), (26, 844396870), (52, 422198435), (65, 337758748), (130, 168879374), (227, 96715060), (260, 84439687), (454, 48357530), (908, 24178765), (1135, 19343012), (2270, 9671506), (2951, 7439620), (4540, 4835753), (5902, 3719810), (11804, 1859905), (14755, 1487924), (29510, 743962), (59020, 371981)]