28728400

素因数分解:

$2^4\times 5^2\times {\mathrm{71821}}^1$

素因数の和:71839

約数の個数: 30

約数和(自身を含む): 69020942

約数和(自身を除く): 40292542

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 71821, 143642, 287284, 359105, 574568, 718210, 1149136, 1436420, 1795525, 2872840, 3591050, 5745680, 7182100, 14364200, 28728400]

約数ペア:

[(1, 28728400), (2, 14364200), (4, 7182100), (5, 5745680), (8, 3591050), (10, 2872840), (16, 1795525), (20, 1436420), (25, 1149136), (40, 718210), (50, 574568), (80, 359105), (100, 287284), (200, 143642), (400, 71821)]