20270187

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 14953365

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 97, 107, 217, 279, 291, 321, 651, 679, 749, 873, 963, 1953, 2037, 2247, 3007, 3317, 6111, 6741, 9021, 9951, 10379, 21049, 23219, 27063, 29853, 31137, 63147, 69657, 72653, 93411, 189441, 208971, 217959, 321749, 653877, 965247, 2252243, 2895741, 6756729, 20270187]

約数ペア:

[(1, 20270187), (3, 6756729), (7, 2895741), (9, 2252243), (21, 965247), (31, 653877), (63, 321749), (93, 217959), (97, 208971), (107, 189441), (217, 93411), (279, 72653), (291, 69657), (321, 63147), (651, 31137), (679, 29853), (749, 27063), (873, 23219), (963, 21049), (1953, 10379), (2037, 9951), (2247, 9021), (3007, 6741), (3317, 6111)]