77990480

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4079}}^1$

素因数の和:4331

約数の個数: 40

約数和(自身を含む): 182131200

約数和(自身を除く): 104140720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1195, 1912, 2390, 3824, 4079, 4780, 8158, 9560, 16316, 19120, 20395, 32632, 40790, 65264, 81580, 163160, 326320, 974881, 1949762, 3899524, 4874405, 7799048, 9748810, 15598096, 19497620, 38995240, 77990480]

約数ペア:

[(1, 77990480), (2, 38995240), (4, 19497620), (5, 15598096), (8, 9748810), (10, 7799048), (16, 4874405), (20, 3899524), (40, 1949762), (80, 974881), (239, 326320), (478, 163160), (956, 81580), (1195, 65264), (1912, 40790), (2390, 32632), (3824, 20395), (4079, 19120), (4780, 16316), (8158, 9560)]