20033985

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 33126912

約数和(自身を除く): 13092927

約数列:

[1, 3, 5, 15, 47, 141, 157, 181, 235, 471, 543, 705, 785, 905, 2355, 2715, 7379, 8507, 22137, 25521, 28417, 36895, 42535, 85251, 110685, 127605, 142085, 426255, 1335599, 4006797, 6677995, 20033985]

約数ペア:

[(1, 20033985), (3, 6677995), (5, 4006797), (15, 1335599), (47, 426255), (141, 142085), (157, 127605), (181, 110685), (235, 85251), (471, 42535), (543, 36895), (705, 28417), (785, 25521), (905, 22137), (2355, 8507), (2715, 7379)]