31428400

素因数分解:

$2^4\times 5^2\times {\mathrm{78571}}^1$

素因数の和:78589

約数の個数: 30

約数和(自身を含む): 75507692

約数和(自身を除く): 44079292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 78571, 157142, 314284, 392855, 628568, 785710, 1257136, 1571420, 1964275, 3142840, 3928550, 6285680, 7857100, 15714200, 31428400]

約数ペア:

[(1, 31428400), (2, 15714200), (4, 7857100), (5, 6285680), (8, 3928550), (10, 3142840), (16, 1964275), (20, 1571420), (25, 1257136), (40, 785710), (50, 628568), (80, 392855), (100, 314284), (200, 157142), (400, 78571)]