20512474580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2837}}^1\times {\mathrm{27809}}^1$

素因数の和:30668

約数の個数: 48

約数和(自身を含む): 46407770640

約数和(自身を除く): 25895296060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2837, 5674, 11348, 14185, 27809, 28370, 36881, 55618, 56740, 73762, 111236, 139045, 147524, 184405, 278090, 361517, 368810, 556180, 723034, 737620, 1446068, 1807585, 3615170, 7230340, 78894133, 157788266, 315576532, 394470665, 788941330, 1025623729, 1577882660, 2051247458, 4102494916, 5128118645, 10256237290, 20512474580]

約数ペア:

[(1, 20512474580), (2, 10256237290), (4, 5128118645), (5, 4102494916), (10, 2051247458), (13, 1577882660), (20, 1025623729), (26, 788941330), (52, 394470665), (65, 315576532), (130, 157788266), (260, 78894133), (2837, 7230340), (5674, 3615170), (11348, 1807585), (14185, 1446068), (27809, 737620), (28370, 723034), (36881, 556180), (55618, 368810), (56740, 361517), (73762, 278090), (111236, 184405), (139045, 147524)]