18739820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{827}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 43400448

約数和(自身を除く): 24660628

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 412, 515, 827, 1030, 1133, 1654, 2060, 2266, 3308, 4135, 4532, 5665, 8270, 9097, 11330, 16540, 18194, 22660, 36388, 45485, 85181, 90970, 170362, 181940, 340724, 425905, 851810, 936991, 1703620, 1873982, 3747964, 4684955, 9369910, 18739820]

約数ペア:

[(1, 18739820), (2, 9369910), (4, 4684955), (5, 3747964), (10, 1873982), (11, 1703620), (20, 936991), (22, 851810), (44, 425905), (55, 340724), (103, 181940), (110, 170362), (206, 90970), (220, 85181), (412, 45485), (515, 36388), (827, 22660), (1030, 18194), (1133, 16540), (1654, 11330), (2060, 9097), (2266, 8270), (3308, 5665), (4135, 4532)]