71820400

素因数分解:

$2^4\times 5^2\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:866

約数の個数: 60

約数和(自身を含む): 173364400

約数和(自身を除く): 101544000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 409, 439, 818, 878, 1636, 1756, 2045, 2195, 3272, 3512, 4090, 4390, 6544, 7024, 8180, 8780, 10225, 10975, 16360, 17560, 20450, 21950, 32720, 35120, 40900, 43900, 81800, 87800, 163600, 175600, 179551, 359102, 718204, 897755, 1436408, 1795510, 2872816, 3591020, 4488775, 7182040, 8977550, 14364080, 17955100, 35910200, 71820400]

約数ペア:

[(1, 71820400), (2, 35910200), (4, 17955100), (5, 14364080), (8, 8977550), (10, 7182040), (16, 4488775), (20, 3591020), (25, 2872816), (40, 1795510), (50, 1436408), (80, 897755), (100, 718204), (200, 359102), (400, 179551), (409, 175600), (439, 163600), (818, 87800), (878, 81800), (1636, 43900), (1756, 40900), (2045, 35120), (2195, 32720), (3272, 21950), (3512, 20450), (4090, 17560), (4390, 16360), (6544, 10975), (7024, 10225), (8180, 8780)]