1290985865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1\times {\mathrm{2399}}^1$

素因数の和:2921

約数の個数: 32

約数和(自身を含む): 1770854400

約数和(自身を除く): 479868535

約数列:

[1, 5, 13, 17, 65, 85, 221, 487, 1105, 2399, 2435, 6331, 8279, 11995, 31187, 31655, 40783, 41395, 107627, 155935, 203915, 530179, 538135, 1168313, 2650895, 5841565, 15188069, 19861321, 75940345, 99306605, 258197173, 1290985865]

約数ペア:

[(1, 1290985865), (5, 258197173), (13, 99306605), (17, 75940345), (65, 19861321), (85, 15188069), (221, 5841565), (487, 2650895), (1105, 1168313), (2399, 538135), (2435, 530179), (6331, 203915), (8279, 155935), (11995, 107627), (31187, 41395), (31655, 40783)]