40490818

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{1021}}^1$

素因数の和:1353

約数の個数: 16

約数和(自身を含む): 61810560

約数和(自身を除く): 21319742

約数列:

[1, 2, 79, 158, 251, 502, 1021, 2042, 19829, 39658, 80659, 161318, 256271, 512542, 20245409, 40490818]

約数ペア:

[(1, 40490818), (2, 20245409), (79, 512542), (158, 256271), (251, 161318), (502, 80659), (1021, 39658), (2042, 19829)]