20344580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1129}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 46131120

約数和(自身を除く): 25786540

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1129, 1802, 2258, 3604, 4505, 4516, 5645, 9010, 11290, 18020, 19193, 22580, 38386, 59837, 76772, 95965, 119674, 191930, 239348, 299185, 383860, 598370, 1017229, 1196740, 2034458, 4068916, 5086145, 10172290, 20344580]

約数ペア:

[(1, 20344580), (2, 10172290), (4, 5086145), (5, 4068916), (10, 2034458), (17, 1196740), (20, 1017229), (34, 598370), (53, 383860), (68, 299185), (85, 239348), (106, 191930), (170, 119674), (212, 95965), (265, 76772), (340, 59837), (530, 38386), (901, 22580), (1060, 19193), (1129, 18020), (1802, 11290), (2258, 9010), (3604, 5645), (4505, 4516)]