901408020460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16987}}^1\times {\mathrm{61703}}^1$

素因数の和:78742

約数の個数: 48

約数和(自身を含む): 1937124516096

約数和(自身を除く): 1035716495636

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 16987, 33974, 61703, 67948, 84935, 123406, 169870, 246812, 308515, 339740, 617030, 730441, 1234060, 1460882, 2653229, 2921764, 3652205, 5306458, 7304410, 10612916, 13266145, 14608820, 26532290, 53064580, 1048148861, 2096297722, 4192595444, 5240744305, 10481488610, 20962977220, 45070401023, 90140802046, 180281604092, 225352005115, 450704010230, 901408020460]

約数ペア:

[(1, 901408020460), (2, 450704010230), (4, 225352005115), (5, 180281604092), (10, 90140802046), (20, 45070401023), (43, 20962977220), (86, 10481488610), (172, 5240744305), (215, 4192595444), (430, 2096297722), (860, 1048148861), (16987, 53064580), (33974, 26532290), (61703, 14608820), (67948, 13266145), (84935, 10612916), (123406, 7304410), (169870, 5306458), (246812, 3652205), (308515, 2921764), (339740, 2653229), (617030, 1460882), (730441, 1234060)]