18811760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21377}}^1$

素因数の和:21401

約数の個数: 40

約数和(自身を含む): 47715696

約数和(自身を除く): 28903936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21377, 42754, 85508, 106885, 171016, 213770, 235147, 342032, 427540, 470294, 855080, 940588, 1175735, 1710160, 1881176, 2351470, 3762352, 4702940, 9405880, 18811760]

約数ペア:

[(1, 18811760), (2, 9405880), (4, 4702940), (5, 3762352), (8, 2351470), (10, 1881176), (11, 1710160), (16, 1175735), (20, 940588), (22, 855080), (40, 470294), (44, 427540), (55, 342032), (80, 235147), (88, 213770), (110, 171016), (176, 106885), (220, 85508), (440, 42754), (880, 21377)]