21295495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2357}}^1$

素因数の和:2514

約数の個数: 16

約数和(自身を含む): 27730080

約数和(自身を除く): 6434585

約数列:

[1, 5, 13, 65, 139, 695, 1807, 2357, 9035, 11785, 30641, 153205, 327623, 1638115, 4259099, 21295495]

約数ペア:

[(1, 21295495), (5, 4259099), (13, 1638115), (65, 327623), (139, 153205), (695, 30641), (1807, 11785), (2357, 9035)]