18868040

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{829}}^1$

素因数の和:1409

約数の個数: 32

約数和(自身を含む): 42579000

約数和(自身を除く): 23710960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 829, 1138, 1658, 2276, 2845, 3316, 4145, 4552, 5690, 6632, 8290, 11380, 16580, 22760, 33160, 471701, 943402, 1886804, 2358505, 3773608, 4717010, 9434020, 18868040]

約数ペア:

[(1, 18868040), (2, 9434020), (4, 4717010), (5, 3773608), (8, 2358505), (10, 1886804), (20, 943402), (40, 471701), (569, 33160), (829, 22760), (1138, 16580), (1658, 11380), (2276, 8290), (2845, 6632), (3316, 5690), (4145, 4552)]