19883750

素因数分解:

$2^1\times 5^4\times {\mathrm{15907}}^1$

素因数の和:15929

約数の個数: 20

約数和(自身を含む): 37272444

約数和(自身を除く): 17388694

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 15907, 31814, 79535, 159070, 397675, 795350, 1988375, 3976750, 9941875, 19883750]

約数ペア:

[(1, 19883750), (2, 9941875), (5, 3976750), (10, 1988375), (25, 795350), (50, 397675), (125, 159070), (250, 79535), (625, 31814), (1250, 15907)]