198156680

素因数分解:

$2^3\times 5^1\times {\mathrm{4953917}}^1$

素因数の和:4953928

約数の個数: 16

約数和(自身を含む): 445852620

約数和(自身を除く): 247695940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4953917, 9907834, 19815668, 24769585, 39631336, 49539170, 99078340, 198156680]

約数ペア:

[(1, 198156680), (2, 99078340), (4, 49539170), (5, 39631336), (8, 24769585), (10, 19815668), (20, 9907834), (40, 4953917)]