71428400

素因数分解:

$2^4\times 5^2\times {\mathrm{178571}}^1$

素因数の和:178589

約数の個数: 30

約数和(自身を含む): 171607692

約数和(自身を除く): 100179292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 178571, 357142, 714284, 892855, 1428568, 1785710, 2857136, 3571420, 4464275, 7142840, 8928550, 14285680, 17857100, 35714200, 71428400]

約数ペア:

[(1, 71428400), (2, 35714200), (4, 17857100), (5, 14285680), (8, 8928550), (10, 7142840), (16, 4464275), (20, 3571420), (25, 2857136), (40, 1785710), (50, 1428568), (80, 892855), (100, 714284), (200, 357142), (400, 178571)]