20318672

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{6791}}^1$

素因数の和:6827

約数の個数: 40

約数和(自身を含む): 45479232

約数和(自身を除く): 25160560

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 136, 176, 187, 272, 374, 748, 1496, 2992, 6791, 13582, 27164, 54328, 74701, 108656, 115447, 149402, 230894, 298804, 461788, 597608, 923576, 1195216, 1269917, 1847152, 2539834, 5079668, 10159336, 20318672]

約数ペア:

[(1, 20318672), (2, 10159336), (4, 5079668), (8, 2539834), (11, 1847152), (16, 1269917), (17, 1195216), (22, 923576), (34, 597608), (44, 461788), (68, 298804), (88, 230894), (136, 149402), (176, 115447), (187, 108656), (272, 74701), (374, 54328), (748, 27164), (1496, 13582), (2992, 6791)]