978590980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{270329}}^1$

素因数の和:270519

約数の個数: 24

約数和(自身を含む): 2066402520

約数和(自身を除く): 1087811540

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 270329, 540658, 1081316, 1351645, 2703290, 5406580, 48929549, 97859098, 195718196, 244647745, 489295490, 978590980]

約数ペア:

[(1, 978590980), (2, 489295490), (4, 244647745), (5, 195718196), (10, 97859098), (20, 48929549), (181, 5406580), (362, 2703290), (724, 1351645), (905, 1081316), (1810, 540658), (3620, 270329)]