420177980

素因数分解:

$2^2\times 5^1\times {\mathrm{2657}}^1\times {\mathrm{7907}}^1$

素因数の和:10573

約数の個数: 24

約数和(自身を含む): 882817488

約数和(自身を除く): 462639508

約数列:

[1, 2, 4, 5, 10, 20, 2657, 5314, 7907, 10628, 13285, 15814, 26570, 31628, 39535, 53140, 79070, 158140, 21008899, 42017798, 84035596, 105044495, 210088990, 420177980]

約数ペア:

[(1, 420177980), (2, 210088990), (4, 105044495), (5, 84035596), (10, 42017798), (20, 21008899), (2657, 158140), (5314, 79070), (7907, 53140), (10628, 39535), (13285, 31628), (15814, 26570)]