20399080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39229}}^1$

素因数の和:39253

約数の個数: 32

約数和(自身を含む): 49429800

約数和(自身を除く): 29030720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39229, 78458, 156916, 196145, 313832, 392290, 509977, 784580, 1019954, 1569160, 2039908, 2549885, 4079816, 5099770, 10199540, 20399080]

約数ペア:

[(1, 20399080), (2, 10199540), (4, 5099770), (5, 4079816), (8, 2549885), (10, 2039908), (13, 1569160), (20, 1019954), (26, 784580), (40, 509977), (52, 392290), (65, 313832), (104, 196145), (130, 156916), (260, 78458), (520, 39229)]