2540920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 5770800

約数和(自身を除く): 3229880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 457, 556, 695, 914, 1112, 1390, 1828, 2285, 2780, 3656, 4570, 5560, 9140, 18280, 63523, 127046, 254092, 317615, 508184, 635230, 1270460, 2540920]

約数ペア:

[(1, 2540920), (2, 1270460), (4, 635230), (5, 508184), (8, 317615), (10, 254092), (20, 127046), (40, 63523), (139, 18280), (278, 9140), (457, 5560), (556, 4570), (695, 3656), (914, 2780), (1112, 2285), (1390, 1828)]