21277529

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{3203}}^1$

素因数の和:3296

約数の個数: 16

約数和(自身を含む): 26554752

約数和(自身を除く): 5277223

約数列:

[1, 7, 13, 73, 91, 511, 949, 3203, 6643, 22421, 41639, 233819, 291473, 1636733, 3039647, 21277529]

約数ペア:

[(1, 21277529), (7, 3039647), (13, 1636733), (73, 291473), (91, 233819), (511, 41639), (949, 22421), (3203, 6643)]