80455600

素因数分解:

$2^4\times 5^2\times {\mathrm{201139}}^1$

素因数の和:201157

約数の個数: 30

約数和(自身を含む): 193295540

約数和(自身を除く): 112839940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201139, 402278, 804556, 1005695, 1609112, 2011390, 3218224, 4022780, 5028475, 8045560, 10056950, 16091120, 20113900, 40227800, 80455600]

約数ペア:

[(1, 80455600), (2, 40227800), (4, 20113900), (5, 16091120), (8, 10056950), (10, 8045560), (16, 5028475), (20, 4022780), (25, 3218224), (40, 2011390), (50, 1609112), (80, 1005695), (100, 804556), (200, 402278), (400, 201139)]