279997160

素因数分解:

$2^3\times 5^1\times {\mathrm{6999929}}^1$

素因数の和:6999940

約数の個数: 16

約数和(自身を含む): 629993700

約数和(自身を除く): 349996540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6999929, 13999858, 27999716, 34999645, 55999432, 69999290, 139998580, 279997160]

約数ペア:

[(1, 279997160), (2, 139998580), (4, 69999290), (5, 55999432), (8, 34999645), (10, 27999716), (20, 13999858), (40, 6999929)]