18715780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{13967}}^1$

素因数の和:14043

約数の個数: 24

約数和(自身を含む): 39892608

約数和(自身を除く): 21176828

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 13967, 27934, 55868, 69835, 139670, 279340, 935789, 1871578, 3743156, 4678945, 9357890, 18715780]

約数ペア:

[(1, 18715780), (2, 9357890), (4, 4678945), (5, 3743156), (10, 1871578), (20, 935789), (67, 279340), (134, 139670), (268, 69835), (335, 55868), (670, 27934), (1340, 13967)]