20382680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7177}}^1$

素因数の和:7259

約数の個数: 32

約数和(自身を含む): 46513440

約数和(自身を除く): 26130760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7177, 14354, 28708, 35885, 57416, 71770, 143540, 287080, 509567, 1019134, 2038268, 2547835, 4076536, 5095670, 10191340, 20382680]

約数ペア:

[(1, 20382680), (2, 10191340), (4, 5095670), (5, 4076536), (8, 2547835), (10, 2038268), (20, 1019134), (40, 509567), (71, 287080), (142, 143540), (284, 71770), (355, 57416), (568, 35885), (710, 28708), (1420, 14354), (2840, 7177)]