20568260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{479}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 25396540

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 113, 190, 226, 380, 452, 479, 565, 958, 1130, 1916, 2147, 2260, 2395, 4294, 4790, 8588, 9101, 9580, 10735, 18202, 21470, 36404, 42940, 45505, 54127, 91010, 108254, 182020, 216508, 270635, 541270, 1028413, 1082540, 2056826, 4113652, 5142065, 10284130, 20568260]

約数ペア:

[(1, 20568260), (2, 10284130), (4, 5142065), (5, 4113652), (10, 2056826), (19, 1082540), (20, 1028413), (38, 541270), (76, 270635), (95, 216508), (113, 182020), (190, 108254), (226, 91010), (380, 54127), (452, 45505), (479, 42940), (565, 36404), (958, 21470), (1130, 18202), (1916, 10735), (2147, 9580), (2260, 9101), (2395, 8588), (4294, 4790)]