20565381005

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{1259}}^1\times {\mathrm{1487}}^1$

素因数の和:2790

約数の個数: 32

約数和(自身を含む): 26773286400

約数和(自身を除く): 6207905395

約数列:

[1, 5, 13, 65, 169, 845, 1259, 1487, 2197, 6295, 7435, 10985, 16367, 19331, 81835, 96655, 212771, 251303, 1063855, 1256515, 1872133, 2766023, 3266939, 9360665, 13830115, 16334695, 24337729, 121688645, 316390477, 1581952385, 4113076201, 20565381005]

約数ペア:

[(1, 20565381005), (5, 4113076201), (13, 1581952385), (65, 316390477), (169, 121688645), (845, 24337729), (1259, 16334695), (1487, 13830115), (2197, 9360665), (6295, 3266939), (7435, 2766023), (10985, 1872133), (16367, 1256515), (19331, 1063855), (81835, 251303), (96655, 212771)]