21057530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3767}}^1$

素因数の和:3830

約数の個数: 32

約数和(自身を含む): 41779584

約数和(自身を除く): 20722054

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3767, 5590, 7534, 18835, 37670, 48971, 97942, 161981, 244855, 323962, 489710, 809905, 1619810, 2105753, 4211506, 10528765, 21057530]

約数ペア:

[(1, 21057530), (2, 10528765), (5, 4211506), (10, 2105753), (13, 1619810), (26, 809905), (43, 489710), (65, 323962), (86, 244855), (130, 161981), (215, 97942), (430, 48971), (559, 37670), (1118, 18835), (2795, 7534), (3767, 5590)]