20920045

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 27292320

約数和(自身を除く): 6372275

約数列:

[1, 5, 19, 41, 95, 131, 205, 655, 779, 1681, 2489, 3895, 5371, 8405, 12445, 26855, 31939, 102049, 159695, 220211, 510245, 1101055, 4184009, 20920045]

約数ペア:

[(1, 20920045), (5, 4184009), (19, 1101055), (41, 510245), (95, 220211), (131, 159695), (205, 102049), (655, 31939), (779, 26855), (1681, 12445), (2489, 8405), (3895, 5371)]