21052590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2347}}^1$

素因数の和:2393

約数の個数: 64

約数和(自身を含む): 56802816

約数和(自身を除く): 35750226

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 115, 130, 138, 195, 230, 299, 345, 390, 598, 690, 897, 1495, 1794, 2347, 2990, 4485, 4694, 7041, 8970, 11735, 14082, 23470, 30511, 35205, 53981, 61022, 70410, 91533, 107962, 152555, 161943, 183066, 269905, 305110, 323886, 457665, 539810, 701753, 809715, 915330, 1403506, 1619430, 2105259, 3508765, 4210518, 7017530, 10526295, 21052590]

約数ペア:

[(1, 21052590), (2, 10526295), (3, 7017530), (5, 4210518), (6, 3508765), (10, 2105259), (13, 1619430), (15, 1403506), (23, 915330), (26, 809715), (30, 701753), (39, 539810), (46, 457665), (65, 323886), (69, 305110), (78, 269905), (115, 183066), (130, 161943), (138, 152555), (195, 107962), (230, 91533), (299, 70410), (345, 61022), (390, 53981), (598, 35205), (690, 30511), (897, 23470), (1495, 14082), (1794, 11735), (2347, 8970), (2990, 7041), (4485, 4694)]