831319640

素因数分解:

$2^3\times 5^1\times {\mathrm{4457}}^1\times {\mathrm{4663}}^1$

素因数の和:9131

約数の個数: 32

約数和(自身を含む): 1871290080

約数和(自身を除く): 1039970440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4457, 4663, 8914, 9326, 17828, 18652, 22285, 23315, 35656, 37304, 44570, 46630, 89140, 93260, 178280, 186520, 20782991, 41565982, 83131964, 103914955, 166263928, 207829910, 415659820, 831319640]

約数ペア:

[(1, 831319640), (2, 415659820), (4, 207829910), (5, 166263928), (8, 103914955), (10, 83131964), (20, 41565982), (40, 20782991), (4457, 186520), (4663, 178280), (8914, 93260), (9326, 89140), (17828, 46630), (18652, 44570), (22285, 37304), (23315, 35656)]