812120

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 1857600

約数和(自身を除く): 1045480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 257, 316, 395, 514, 632, 790, 1028, 1285, 1580, 2056, 2570, 3160, 5140, 10280, 20303, 40606, 81212, 101515, 162424, 203030, 406060, 812120]

約数ペア:

[(1, 812120), (2, 406060), (4, 203030), (5, 162424), (8, 101515), (10, 81212), (20, 40606), (40, 20303), (79, 10280), (158, 5140), (257, 3160), (316, 2570), (395, 2056), (514, 1580), (632, 1285), (790, 1028)]