12990505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{941}}^1$

素因数の和:1208

約数の個数: 16

約数和(自身を含む): 17091648

約数和(自身を除く): 4101143

約数列:

[1, 5, 11, 55, 251, 941, 1255, 2761, 4705, 10351, 13805, 51755, 236191, 1180955, 2598101, 12990505]

約数ペア:

[(1, 12990505), (5, 2598101), (11, 1180955), (55, 236191), (251, 51755), (941, 13805), (1255, 10351), (2761, 4705)]