19873160

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{719}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 44841600

約数和(自身を除く): 24968440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 719, 1382, 1438, 2764, 2876, 3455, 3595, 5528, 5752, 6910, 7190, 13820, 14380, 27640, 28760, 496829, 993658, 1987316, 2484145, 3974632, 4968290, 9936580, 19873160]

約数ペア:

[(1, 19873160), (2, 9936580), (4, 4968290), (5, 3974632), (8, 2484145), (10, 1987316), (20, 993658), (40, 496829), (691, 28760), (719, 27640), (1382, 14380), (1438, 13820), (2764, 7190), (2876, 6910), (3455, 5752), (3595, 5528)]