397788400

素因数分解:

$2^4\times 5^2\times {\mathrm{994471}}^1$

素因数の和:994489

約数の個数: 30

約数和(自身を含む): 955687592

約数和(自身を除く): 557899192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 994471, 1988942, 3977884, 4972355, 7955768, 9944710, 15911536, 19889420, 24861775, 39778840, 49723550, 79557680, 99447100, 198894200, 397788400]

約数ペア:

[(1, 397788400), (2, 198894200), (4, 99447100), (5, 79557680), (8, 49723550), (10, 39778840), (16, 24861775), (20, 19889420), (25, 15911536), (40, 9944710), (50, 7955768), (80, 4972355), (100, 3977884), (200, 1988942), (400, 994471)]