80157980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{5351}}^1$

素因数の和:5474

約数の個数: 48

約数和(自身を含む): 194213376

約数和(自身を除く): 114055396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1498, 2140, 2996, 3745, 5351, 7490, 10702, 14980, 21404, 26755, 37457, 53510, 74914, 107020, 149828, 187285, 374570, 572557, 749140, 1145114, 2290228, 2862785, 4007899, 5725570, 8015798, 11451140, 16031596, 20039495, 40078990, 80157980]

約数ペア:

[(1, 80157980), (2, 40078990), (4, 20039495), (5, 16031596), (7, 11451140), (10, 8015798), (14, 5725570), (20, 4007899), (28, 2862785), (35, 2290228), (70, 1145114), (107, 749140), (140, 572557), (214, 374570), (428, 187285), (535, 149828), (749, 107020), (1070, 74914), (1498, 53510), (2140, 37457), (2996, 26755), (3745, 21404), (5351, 14980), (7490, 10702)]