18828280

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1229}}^1$

素因数の和:1623

約数の個数: 32

約数和(自身を含む): 42508800

約数和(自身を除く): 23680520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1229, 1532, 1915, 2458, 3064, 3830, 4916, 6145, 7660, 9832, 12290, 15320, 24580, 49160, 470707, 941414, 1882828, 2353535, 3765656, 4707070, 9414140, 18828280]

約数ペア:

[(1, 18828280), (2, 9414140), (4, 4707070), (5, 3765656), (8, 2353535), (10, 1882828), (20, 941414), (40, 470707), (383, 49160), (766, 24580), (1229, 15320), (1532, 12290), (1915, 9832), (2458, 7660), (3064, 6145), (3830, 4916)]