21316412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5189}}^1$

素因数の和:5285

約数の個数: 24

約数和(自身を含む): 40689600

約数和(自身を除く): 19373188

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5189, 10378, 20756, 67457, 134914, 269828, 409931, 819862, 1639724, 5329103, 10658206, 21316412]

約数ペア:

[(1, 21316412), (2, 10658206), (4, 5329103), (13, 1639724), (26, 819862), (52, 409931), (79, 269828), (158, 134914), (316, 67457), (1027, 20756), (2054, 10378), (4108, 5189)]