78870980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{22031}}^1$

素因数の和:22219

約数の個数: 24

約数和(自身を含む): 166561920

約数和(自身を除く): 87690940

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 22031, 44062, 88124, 110155, 220310, 440620, 3943549, 7887098, 15774196, 19717745, 39435490, 78870980]

約数ペア:

[(1, 78870980), (2, 39435490), (4, 19717745), (5, 15774196), (10, 7887098), (20, 3943549), (179, 440620), (358, 220310), (716, 110155), (895, 88124), (1790, 44062), (3580, 22031)]