28396400

素因数分解:

$2^4\times 5^2\times {\mathrm{70991}}^1$

素因数の和:71009

約数の個数: 30

約数和(自身を含む): 68223312

約数和(自身を除く): 39826912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 70991, 141982, 283964, 354955, 567928, 709910, 1135856, 1419820, 1774775, 2839640, 3549550, 5679280, 7099100, 14198200, 28396400]

約数ペア:

[(1, 28396400), (2, 14198200), (4, 7099100), (5, 5679280), (8, 3549550), (10, 2839640), (16, 1774775), (20, 1419820), (25, 1135856), (40, 709910), (50, 567928), (80, 354955), (100, 283964), (200, 141982), (400, 70991)]