18709640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^2$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 43893900

約数和(自身を除く): 25184260

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 127, 145, 232, 254, 290, 508, 580, 635, 1016, 1160, 1270, 2540, 3683, 5080, 7366, 14732, 16129, 18415, 29464, 32258, 36830, 64516, 73660, 80645, 129032, 147320, 161290, 322580, 467741, 645160, 935482, 1870964, 2338705, 3741928, 4677410, 9354820, 18709640]

約数ペア:

[(1, 18709640), (2, 9354820), (4, 4677410), (5, 3741928), (8, 2338705), (10, 1870964), (20, 935482), (29, 645160), (40, 467741), (58, 322580), (116, 161290), (127, 147320), (145, 129032), (232, 80645), (254, 73660), (290, 64516), (508, 36830), (580, 32258), (635, 29464), (1016, 18415), (1160, 16129), (1270, 14732), (2540, 7366), (3683, 5080)]