20780320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11807}}^1$

素因数の和:11833

約数の個数: 48

約数和(自身を含む): 53561088

約数和(自身を除く): 32780768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11807, 23614, 47228, 59035, 94456, 118070, 129877, 188912, 236140, 259754, 377824, 472280, 519508, 649385, 944560, 1039016, 1298770, 1889120, 2078032, 2597540, 4156064, 5195080, 10390160, 20780320]

約数ペア:

[(1, 20780320), (2, 10390160), (4, 5195080), (5, 4156064), (8, 2597540), (10, 2078032), (11, 1889120), (16, 1298770), (20, 1039016), (22, 944560), (32, 649385), (40, 519508), (44, 472280), (55, 377824), (80, 259754), (88, 236140), (110, 188912), (160, 129877), (176, 118070), (220, 94456), (352, 59035), (440, 47228), (880, 23614), (1760, 11807)]