206865640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{569}}^1$

素因数の和:790

約数の個数: 64

約数和(自身を含む): 477090000

約数和(自身を除く): 270224360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 149, 244, 298, 305, 488, 569, 596, 610, 745, 1138, 1192, 1220, 1490, 2276, 2440, 2845, 2980, 4552, 5690, 5960, 9089, 11380, 18178, 22760, 34709, 36356, 45445, 69418, 72712, 84781, 90890, 138836, 169562, 173545, 181780, 277672, 339124, 347090, 363560, 423905, 678248, 694180, 847810, 1388360, 1695620, 3391240, 5171641, 10343282, 20686564, 25858205, 41373128, 51716410, 103432820, 206865640]

約数ペア:

[(1, 206865640), (2, 103432820), (4, 51716410), (5, 41373128), (8, 25858205), (10, 20686564), (20, 10343282), (40, 5171641), (61, 3391240), (122, 1695620), (149, 1388360), (244, 847810), (298, 694180), (305, 678248), (488, 423905), (569, 363560), (596, 347090), (610, 339124), (745, 277672), (1138, 181780), (1192, 173545), (1220, 169562), (1490, 138836), (2276, 90890), (2440, 84781), (2845, 72712), (2980, 69418), (4552, 45445), (5690, 36356), (5960, 34709), (9089, 22760), (11380, 18178)]