81921200

素因数分解:

$2^4\times 5^2\times {\mathrm{204803}}^1$

素因数の和:204821

約数の個数: 30

約数和(自身を含む): 196816644

約数和(自身を除く): 114895444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 204803, 409606, 819212, 1024015, 1638424, 2048030, 3276848, 4096060, 5120075, 8192120, 10240150, 16384240, 20480300, 40960600, 81921200]

約数ペア:

[(1, 81921200), (2, 40960600), (4, 20480300), (5, 16384240), (8, 10240150), (10, 8192120), (16, 5120075), (20, 4096060), (25, 3276848), (40, 2048030), (50, 1638424), (80, 1024015), (100, 819212), (200, 409606), (400, 204803)]