27996400

素因数分解:

$2^4\times 5^2\times {\mathrm{69991}}^1$

素因数の和:70009

約数の個数: 30

約数和(自身を含む): 67262312

約数和(自身を除く): 39265912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 69991, 139982, 279964, 349955, 559928, 699910, 1119856, 1399820, 1749775, 2799640, 3499550, 5599280, 6999100, 13998200, 27996400]

約数ペア:

[(1, 27996400), (2, 13998200), (4, 6999100), (5, 5599280), (8, 3499550), (10, 2799640), (16, 1749775), (20, 1399820), (25, 1119856), (40, 699910), (50, 559928), (80, 349955), (100, 279964), (200, 139982), (400, 69991)]