20624080

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3631}}^1$

素因数の和:3715

約数の個数: 40

約数和(自身を含む): 48639744

約数和(自身を除く): 28015664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3631, 5680, 7262, 14524, 18155, 29048, 36310, 58096, 72620, 145240, 257801, 290480, 515602, 1031204, 1289005, 2062408, 2578010, 4124816, 5156020, 10312040, 20624080]

約数ペア:

[(1, 20624080), (2, 10312040), (4, 5156020), (5, 4124816), (8, 2578010), (10, 2062408), (16, 1289005), (20, 1031204), (40, 515602), (71, 290480), (80, 257801), (142, 145240), (284, 72620), (355, 58096), (568, 36310), (710, 29048), (1136, 18155), (1420, 14524), (2840, 7262), (3631, 5680)]