27921985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 41690880

約数和(自身を除く): 13768895

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 455, 545, 563, 763, 1417, 2815, 3815, 3941, 7085, 7319, 9919, 19705, 36595, 49595, 51233, 61367, 256165, 306835, 429569, 797771, 2147845, 3988855, 5584397, 27921985]

約数ペア:

[(1, 27921985), (5, 5584397), (7, 3988855), (13, 2147845), (35, 797771), (65, 429569), (91, 306835), (109, 256165), (455, 61367), (545, 51233), (563, 49595), (763, 36595), (1417, 19705), (2815, 9919), (3815, 7319), (3941, 7085)]