31302280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18199}}^1$

素因数の和:18253

約数の個数: 32

約数和(自身を含む): 72072000

約数和(自身を除く): 40769720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18199, 36398, 72796, 90995, 145592, 181990, 363980, 727960, 782557, 1565114, 3130228, 3912785, 6260456, 7825570, 15651140, 31302280]

約数ペア:

[(1, 31302280), (2, 15651140), (4, 7825570), (5, 6260456), (8, 3912785), (10, 3130228), (20, 1565114), (40, 782557), (43, 727960), (86, 363980), (172, 181990), (215, 145592), (344, 90995), (430, 72796), (860, 36398), (1720, 18199)]