20689630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{953}}^1$

素因数の和:1140

約数の個数: 32

約数和(自身を含む): 40388544

約数和(自身を除く): 19698914

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 167, 334, 835, 953, 1670, 1906, 2171, 4342, 4765, 9530, 10855, 12389, 21710, 24778, 61945, 123890, 159151, 318302, 795755, 1591510, 2068963, 4137926, 10344815, 20689630]

約数ペア:

[(1, 20689630), (2, 10344815), (5, 4137926), (10, 2068963), (13, 1591510), (26, 795755), (65, 318302), (130, 159151), (167, 123890), (334, 61945), (835, 24778), (953, 21710), (1670, 12389), (1906, 10855), (2171, 9530), (4342, 4765)]