390237804560

素因数分解:

$2^4\times 5^1\times {\mathrm{4877972557}}^1$

素因数の和:4877972570

約数の個数: 20

約数和(自身を含む): 907302895788

約数和(自身を除く): 517065091228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4877972557, 9755945114, 19511890228, 24389862785, 39023780456, 48779725570, 78047560912, 97559451140, 195118902280, 390237804560]

約数ペア:

[(1, 390237804560), (2, 195118902280), (4, 97559451140), (5, 78047560912), (8, 48779725570), (10, 39023780456), (16, 24389862785), (20, 19511890228), (40, 9755945114), (80, 4877972557)]