20805926870

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{787}}^1\times {\mathrm{25667}}^1$

素因数の和:26564

約数の個数: 32

約数和(自身を含む): 37863790848

約数和(自身を除く): 17057863978

約数列:

[1, 2, 5, 10, 103, 206, 515, 787, 1030, 1574, 3935, 7870, 25667, 51334, 81061, 128335, 162122, 256670, 405305, 810610, 2643701, 5287402, 13218505, 20199929, 26437010, 40399858, 100999645, 201999290, 2080592687, 4161185374, 10402963435, 20805926870]

約数ペア:

[(1, 20805926870), (2, 10402963435), (5, 4161185374), (10, 2080592687), (103, 201999290), (206, 100999645), (515, 40399858), (787, 26437010), (1030, 20199929), (1574, 13218505), (3935, 5287402), (7870, 2643701), (25667, 810610), (51334, 405305), (81061, 256670), (128335, 162122)]