20869615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{191}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 27788544

約数和(自身を除く): 6918929

約数列:

[1, 5, 13, 41, 65, 191, 205, 533, 955, 1681, 2483, 2665, 7831, 8405, 12415, 21853, 39155, 101803, 109265, 321071, 509015, 1605355, 4173923, 20869615]

約数ペア:

[(1, 20869615), (5, 4173923), (13, 1605355), (41, 509015), (65, 321071), (191, 109265), (205, 101803), (533, 39155), (955, 21853), (1681, 12415), (2483, 8405), (2665, 7831)]