561580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{653}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 1208592

約数和(自身を除く): 647012

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 653, 860, 1306, 2612, 3265, 6530, 13060, 28079, 56158, 112316, 140395, 280790, 561580]

約数ペア:

[(1, 561580), (2, 280790), (4, 140395), (5, 112316), (10, 56158), (20, 28079), (43, 13060), (86, 6530), (172, 3265), (215, 2612), (430, 1306), (653, 860)]