20647660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{739}}^1$

素因数の和:886

約数の個数: 48

約数和(自身を含む): 47738880

約数和(自身を除く): 27091220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 127, 220, 254, 508, 635, 739, 1270, 1397, 1478, 2540, 2794, 2956, 3695, 5588, 6985, 7390, 8129, 13970, 14780, 16258, 27940, 32516, 40645, 81290, 93853, 162580, 187706, 375412, 469265, 938530, 1032383, 1877060, 2064766, 4129532, 5161915, 10323830, 20647660]

約数ペア:

[(1, 20647660), (2, 10323830), (4, 5161915), (5, 4129532), (10, 2064766), (11, 1877060), (20, 1032383), (22, 938530), (44, 469265), (55, 375412), (110, 187706), (127, 162580), (220, 93853), (254, 81290), (508, 40645), (635, 32516), (739, 27940), (1270, 16258), (1397, 14780), (1478, 13970), (2540, 8129), (2794, 7390), (2956, 6985), (3695, 5588)]