19971644

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1063}}^1$

素因数の和:1146

約数の個数: 48

約数和(自身を含む): 44330496

約数和(自身を除く): 24358852

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 61, 77, 122, 154, 244, 308, 427, 671, 854, 1063, 1342, 1708, 2126, 2684, 4252, 4697, 7441, 9394, 11693, 14882, 18788, 23386, 29764, 46772, 64843, 81851, 129686, 163702, 259372, 327404, 453901, 713273, 907802, 1426546, 1815604, 2853092, 4992911, 9985822, 19971644]

約数ペア:

[(1, 19971644), (2, 9985822), (4, 4992911), (7, 2853092), (11, 1815604), (14, 1426546), (22, 907802), (28, 713273), (44, 453901), (61, 327404), (77, 259372), (122, 163702), (154, 129686), (244, 81851), (308, 64843), (427, 46772), (671, 29764), (854, 23386), (1063, 18788), (1342, 14882), (1708, 11693), (2126, 9394), (2684, 7441), (4252, 4697)]