78903920

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7529}}^1$

素因数の和:7673

約数の個数: 40

約数和(自身を含む): 184876560

約数和(自身を除く): 105972640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 7529, 10480, 15058, 30116, 37645, 60232, 75290, 120464, 150580, 301160, 602320, 986299, 1972598, 3945196, 4931495, 7890392, 9862990, 15780784, 19725980, 39451960, 78903920]

約数ペア:

[(1, 78903920), (2, 39451960), (4, 19725980), (5, 15780784), (8, 9862990), (10, 7890392), (16, 4931495), (20, 3945196), (40, 1972598), (80, 986299), (131, 602320), (262, 301160), (524, 150580), (655, 120464), (1048, 75290), (1310, 60232), (2096, 37645), (2620, 30116), (5240, 15058), (7529, 10480)]