81311600

素因数分解:

$2^4\times 5^2\times {\mathrm{203279}}^1$

素因数の和:203297

約数の個数: 30

約数和(自身を含む): 195352080

約数和(自身を除く): 114040480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203279, 406558, 813116, 1016395, 1626232, 2032790, 3252464, 4065580, 5081975, 8131160, 10163950, 16262320, 20327900, 40655800, 81311600]

約数ペア:

[(1, 81311600), (2, 40655800), (4, 20327900), (5, 16262320), (8, 10163950), (10, 8131160), (16, 5081975), (20, 4065580), (25, 3252464), (40, 2032790), (50, 1626232), (80, 1016395), (100, 813116), (200, 406558), (400, 203279)]