20283920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8179}}^1$

素因数の和:8223

約数の個数: 40

約数和(自身を含む): 48687360

約数和(自身を除く): 28403440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8179, 16358, 32716, 40895, 65432, 81790, 130864, 163580, 253549, 327160, 507098, 654320, 1014196, 1267745, 2028392, 2535490, 4056784, 5070980, 10141960, 20283920]

約数ペア:

[(1, 20283920), (2, 10141960), (4, 5070980), (5, 4056784), (8, 2535490), (10, 2028392), (16, 1267745), (20, 1014196), (31, 654320), (40, 507098), (62, 327160), (80, 253549), (124, 163580), (155, 130864), (248, 81790), (310, 65432), (496, 40895), (620, 32716), (1240, 16358), (2480, 8179)]