20249859

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{811}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 32739840

約数和(自身を除く): 12489981

約数列:

[1, 3, 7, 21, 29, 41, 87, 123, 203, 287, 609, 811, 861, 1189, 2433, 3567, 5677, 8323, 17031, 23519, 24969, 33251, 70557, 99753, 164633, 232757, 493899, 698271, 964279, 2892837, 6749953, 20249859]

約数ペア:

[(1, 20249859), (3, 6749953), (7, 2892837), (21, 964279), (29, 698271), (41, 493899), (87, 232757), (123, 164633), (203, 99753), (287, 70557), (609, 33251), (811, 24969), (861, 23519), (1189, 17031), (2433, 8323), (3567, 5677)]