20050900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4663}}^1$

素因数の和:4720

約数の個数: 36

約数和(自身を含む): 44531872

約数和(自身を除く): 24480972

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4663, 9326, 18652, 23315, 46630, 93260, 116575, 200509, 233150, 401018, 466300, 802036, 1002545, 2005090, 4010180, 5012725, 10025450, 20050900]

約数ペア:

[(1, 20050900), (2, 10025450), (4, 5012725), (5, 4010180), (10, 2005090), (20, 1002545), (25, 802036), (43, 466300), (50, 401018), (86, 233150), (100, 200509), (172, 116575), (215, 93260), (430, 46630), (860, 23315), (1075, 18652), (2150, 9326), (4300, 4663)]