18970924360

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{52181}}^1$

素因数の和:52402

約数の個数: 64

約数和(自身を含む): 43676334000

約数和(自身を除く): 24705409640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 149, 244, 298, 305, 488, 596, 610, 745, 1192, 1220, 1490, 2440, 2980, 5960, 9089, 18178, 36356, 45445, 52181, 72712, 90890, 104362, 181780, 208724, 260905, 363560, 417448, 521810, 1043620, 2087240, 3183041, 6366082, 7774969, 12732164, 15549938, 15915205, 25464328, 31099876, 31830410, 38874845, 62199752, 63660820, 77749690, 127321640, 155499380, 310998760, 474273109, 948546218, 1897092436, 2371365545, 3794184872, 4742731090, 9485462180, 18970924360]

約数ペア:

[(1, 18970924360), (2, 9485462180), (4, 4742731090), (5, 3794184872), (8, 2371365545), (10, 1897092436), (20, 948546218), (40, 474273109), (61, 310998760), (122, 155499380), (149, 127321640), (244, 77749690), (298, 63660820), (305, 62199752), (488, 38874845), (596, 31830410), (610, 31099876), (745, 25464328), (1192, 15915205), (1220, 15549938), (1490, 12732164), (2440, 7774969), (2980, 6366082), (5960, 3183041), (9089, 2087240), (18178, 1043620), (36356, 521810), (45445, 417448), (52181, 363560), (72712, 260905), (90890, 208724), (104362, 181780)]