21006987128

素因数分解:

$2^3\times {\mathrm{223}}^1\times {\mathrm{1277}}^1\times {\mathrm{9221}}^1$

素因数の和:10727

約数の個数: 32

約数和(自身を含む): 39600005760

約数和(自身を除く): 18593018632

約数列:

[1, 2, 4, 8, 223, 446, 892, 1277, 1784, 2554, 5108, 9221, 10216, 18442, 36884, 73768, 284771, 569542, 1139084, 2056283, 2278168, 4112566, 8225132, 11775217, 16450264, 23550434, 47100868, 94201736, 2625873391, 5251746782, 10503493564, 21006987128]

約数ペア:

[(1, 21006987128), (2, 10503493564), (4, 5251746782), (8, 2625873391), (223, 94201736), (446, 47100868), (892, 23550434), (1277, 16450264), (1784, 11775217), (2554, 8225132), (5108, 4112566), (9221, 2278168), (10216, 2056283), (18442, 1139084), (36884, 569542), (73768, 284771)]