17972721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5297}}^1$

素因数の和:5345

約数の個数: 24

約数和(自身を含む): 28927080

約数和(自身を除く): 10954359

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 5297, 15891, 47673, 68861, 153613, 206583, 460839, 619749, 1382517, 1996969, 5990907, 17972721]

約数ペア:

[(1, 17972721), (3, 5990907), (9, 1996969), (13, 1382517), (29, 619749), (39, 460839), (87, 206583), (117, 153613), (261, 68861), (377, 47673), (1131, 15891), (3393, 5297)]