20888448520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1\times {\mathrm{29921}}^1$

素因数の和:30526

約数の個数: 64

約数和(自身を含む): 48602903040

約数和(自身を除く): 27714454520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 563, 620, 1126, 1240, 2252, 2815, 4504, 5630, 11260, 17453, 22520, 29921, 34906, 59842, 69812, 87265, 119684, 139624, 149605, 174530, 239368, 299210, 349060, 598420, 698120, 927551, 1196840, 1855102, 3710204, 4637755, 7420408, 9275510, 16845523, 18551020, 33691046, 37102040, 67382092, 84227615, 134764184, 168455230, 336910460, 522211213, 673820920, 1044422426, 2088844852, 2611056065, 4177689704, 5222112130, 10444224260, 20888448520]

約数ペア:

[(1, 20888448520), (2, 10444224260), (4, 5222112130), (5, 4177689704), (8, 2611056065), (10, 2088844852), (20, 1044422426), (31, 673820920), (40, 522211213), (62, 336910460), (124, 168455230), (155, 134764184), (248, 84227615), (310, 67382092), (563, 37102040), (620, 33691046), (1126, 18551020), (1240, 16845523), (2252, 9275510), (2815, 7420408), (4504, 4637755), (5630, 3710204), (11260, 1855102), (17453, 1196840), (22520, 927551), (29921, 698120), (34906, 598420), (59842, 349060), (69812, 299210), (87265, 239368), (119684, 174530), (139624, 149605)]