21855310

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70501}}^1$

素因数の和:70539

約数の個数: 16

約数和(自身を含む): 40609152

約数和(自身を除く): 18753842

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70501, 141002, 352505, 705010, 2185531, 4371062, 10927655, 21855310]

約数ペア:

[(1, 21855310), (2, 10927655), (5, 4371062), (10, 2185531), (31, 705010), (62, 352505), (155, 141002), (310, 70501)]