81538460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{14107}}^1$

素因数の和:14150

約数の個数: 36

約数和(自身を含む): 181908552

約数和(自身を除く): 100370092

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5780, 14107, 28214, 56428, 70535, 141070, 239819, 282140, 479638, 959276, 1199095, 2398190, 4076923, 4796380, 8153846, 16307692, 20384615, 40769230, 81538460]

約数ペア:

[(1, 81538460), (2, 40769230), (4, 20384615), (5, 16307692), (10, 8153846), (17, 4796380), (20, 4076923), (34, 2398190), (68, 1199095), (85, 959276), (170, 479638), (289, 282140), (340, 239819), (578, 141070), (1156, 70535), (1445, 56428), (2890, 28214), (5780, 14107)]