21262060

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13457}}^1$

素因数の和:13545

約数の個数: 24

約数和(自身を含む): 45218880

約数和(自身を除く): 23956820

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13457, 26914, 53828, 67285, 134570, 269140, 1063103, 2126206, 4252412, 5315515, 10631030, 21262060]

約数ペア:

[(1, 21262060), (2, 10631030), (4, 5315515), (5, 4252412), (10, 2126206), (20, 1063103), (79, 269140), (158, 134570), (316, 67285), (395, 53828), (790, 26914), (1580, 13457)]