888900400

素因数分解:

$2^4\times 5^2\times {\mathrm{2222251}}^1$

素因数の和:2222269

約数の個数: 30

約数和(自身を含む): 2135584172

約数和(自身を除く): 1246683772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2222251, 4444502, 8889004, 11111255, 17778008, 22222510, 35556016, 44445020, 55556275, 88890040, 111112550, 177780080, 222225100, 444450200, 888900400]

約数ペア:

[(1, 888900400), (2, 444450200), (4, 222225100), (5, 177780080), (8, 111112550), (10, 88890040), (16, 55556275), (20, 44445020), (25, 35556016), (40, 22222510), (50, 17778008), (80, 11111255), (100, 8889004), (200, 4444502), (400, 2222251)]