20192990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{389}}^1$

素因数の和:604

約数の個数: 32

約数和(自身を含む): 37908000

約数和(自身を除く): 17715010

約数列:

[1, 2, 5, 10, 29, 58, 145, 179, 290, 358, 389, 778, 895, 1790, 1945, 3890, 5191, 10382, 11281, 22562, 25955, 51910, 56405, 69631, 112810, 139262, 348155, 696310, 2019299, 4038598, 10096495, 20192990]

約数ペア:

[(1, 20192990), (2, 10096495), (5, 4038598), (10, 2019299), (29, 696310), (58, 348155), (145, 139262), (179, 112810), (290, 69631), (358, 56405), (389, 51910), (778, 25955), (895, 22562), (1790, 11281), (1945, 10382), (3890, 5191)]