20166580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{509}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 48666240

約数和(自身を除く): 28499660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 283, 509, 566, 1018, 1132, 1415, 1981, 2036, 2545, 2830, 3563, 3962, 5090, 5660, 7126, 7924, 9905, 10180, 14252, 17815, 19810, 35630, 39620, 71260, 144047, 288094, 576188, 720235, 1008329, 1440470, 2016658, 2880940, 4033316, 5041645, 10083290, 20166580]

約数ペア:

[(1, 20166580), (2, 10083290), (4, 5041645), (5, 4033316), (7, 2880940), (10, 2016658), (14, 1440470), (20, 1008329), (28, 720235), (35, 576188), (70, 288094), (140, 144047), (283, 71260), (509, 39620), (566, 35630), (1018, 19810), (1132, 17815), (1415, 14252), (1981, 10180), (2036, 9905), (2545, 7924), (2830, 7126), (3563, 5660), (3962, 5090)]