90695920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{161957}}^1$

素因数の和:161977

約数の個数: 40

約数和(自身を含む): 240993504

約数和(自身を除く): 150297584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 161957, 323914, 647828, 809785, 1133699, 1295656, 1619570, 2267398, 2591312, 3239140, 4534796, 5668495, 6478280, 9069592, 11336990, 12956560, 18139184, 22673980, 45347960, 90695920]

約数ペア:

[(1, 90695920), (2, 45347960), (4, 22673980), (5, 18139184), (7, 12956560), (8, 11336990), (10, 9069592), (14, 6478280), (16, 5668495), (20, 4534796), (28, 3239140), (35, 2591312), (40, 2267398), (56, 1619570), (70, 1295656), (80, 1133699), (112, 809785), (140, 647828), (280, 323914), (560, 161957)]