21990595

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{181}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 29575728

約数和(自身を除く): 7585133

約数列:

[1, 5, 11, 47, 55, 181, 235, 517, 905, 1991, 2209, 2585, 8507, 9955, 11045, 24299, 42535, 93577, 121495, 399829, 467885, 1999145, 4398119, 21990595]

約数ペア:

[(1, 21990595), (5, 4398119), (11, 1999145), (47, 467885), (55, 399829), (181, 121495), (235, 93577), (517, 42535), (905, 24299), (1991, 11045), (2209, 9955), (2585, 8507)]