8227640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1997}}^1$

素因数の和:2111

約数の個数: 32

約数和(自身を含む): 18701280

約数和(自身を除く): 10473640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 1997, 2060, 3994, 4120, 7988, 9985, 15976, 19970, 39940, 79880, 205691, 411382, 822764, 1028455, 1645528, 2056910, 4113820, 8227640]

約数ペア:

[(1, 8227640), (2, 4113820), (4, 2056910), (5, 1645528), (8, 1028455), (10, 822764), (20, 411382), (40, 205691), (103, 79880), (206, 39940), (412, 19970), (515, 15976), (824, 9985), (1030, 7988), (1997, 4120), (2060, 3994)]