20408506

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1\times {\mathrm{523}}^1$

素因数の和:813

約数の個数: 16

約数和(自身を含む): 31125600

約数和(自身を除く): 10717094

約数列:

[1, 2, 109, 179, 218, 358, 523, 1046, 19511, 39022, 57007, 93617, 114014, 187234, 10204253, 20408506]

約数ペア:

[(1, 20408506), (2, 10204253), (109, 187234), (179, 114014), (218, 93617), (358, 57007), (523, 39022), (1046, 19511)]