21193406

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{2621}}^1$

素因数の和:2947

約数の個数: 16

約数和(自身を含む): 34358688

約数和(自身を除く): 13165282

約数列:

[1, 2, 13, 26, 311, 622, 2621, 4043, 5242, 8086, 34073, 68146, 815131, 1630262, 10596703, 21193406]

約数ペア:

[(1, 21193406), (2, 10596703), (13, 1630262), (26, 815131), (311, 68146), (622, 34073), (2621, 8086), (4043, 5242)]