21861045

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15671}}^1$

素因数の和:15713

約数の個数: 24

約数和(自身を含む): 39117312

約数和(自身を除く): 17256267

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15671, 47013, 78355, 141039, 235065, 485801, 705195, 1457403, 2429005, 4372209, 7287015, 21861045]

約数ペア:

[(1, 21861045), (3, 7287015), (5, 4372209), (9, 2429005), (15, 1457403), (31, 705195), (45, 485801), (93, 235065), (155, 141039), (279, 78355), (465, 47013), (1395, 15671)]