21212385

素因数分解:

$3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{9491}}^1$

素因数の和:9648

約数の個数: 16

約数和(自身を含む): 34171200

約数和(自身を除く): 12958815

約数列:

[1, 3, 5, 15, 149, 447, 745, 2235, 9491, 28473, 47455, 142365, 1414159, 4242477, 7070795, 21212385]

約数ペア:

[(1, 21212385), (3, 7070795), (5, 4242477), (15, 1414159), (149, 142365), (447, 47455), (745, 28473), (2235, 9491)]