388687520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{186869}}^1$

素因数の和:186897

約数の個数: 48

約数和(自身を含む): 988916040

約数和(自身を除く): 600228520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 186869, 373738, 747476, 934345, 1494952, 1868690, 2429297, 2989904, 3737380, 4858594, 5979808, 7474760, 9717188, 12146485, 14949520, 19434376, 24292970, 29899040, 38868752, 48585940, 77737504, 97171880, 194343760, 388687520]

約数ペア:

[(1, 388687520), (2, 194343760), (4, 97171880), (5, 77737504), (8, 48585940), (10, 38868752), (13, 29899040), (16, 24292970), (20, 19434376), (26, 14949520), (32, 12146485), (40, 9717188), (52, 7474760), (65, 5979808), (80, 4858594), (104, 3737380), (130, 2989904), (160, 2429297), (208, 1868690), (260, 1494952), (416, 934345), (520, 747476), (1040, 373738), (2080, 186869)]