20578620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1741}}^1$

素因数の和:1950

約数の個数: 48

約数和(自身を含む): 57945888

約数和(自身を除く): 37367268

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 197, 394, 591, 788, 985, 1182, 1741, 1970, 2364, 2955, 3482, 3940, 5223, 5910, 6964, 8705, 10446, 11820, 17410, 20892, 26115, 34820, 52230, 104460, 342977, 685954, 1028931, 1371908, 1714885, 2057862, 3429770, 4115724, 5144655, 6859540, 10289310, 20578620]

約数ペア:

[(1, 20578620), (2, 10289310), (3, 6859540), (4, 5144655), (5, 4115724), (6, 3429770), (10, 2057862), (12, 1714885), (15, 1371908), (20, 1028931), (30, 685954), (60, 342977), (197, 104460), (394, 52230), (591, 34820), (788, 26115), (985, 20892), (1182, 17410), (1741, 11820), (1970, 10446), (2364, 8705), (2955, 6964), (3482, 5910), (3940, 5223)]