21854979

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1721}}^1$

素因数の和:1827

約数の個数: 24

約数和(自身を含む): 33847632

約数和(自身を除く): 11992653

約数列:

[1, 3, 9, 17, 51, 83, 153, 249, 747, 1411, 1721, 4233, 5163, 12699, 15489, 29257, 87771, 142843, 263313, 428529, 1285587, 2428331, 7284993, 21854979]

約数ペア:

[(1, 21854979), (3, 7284993), (9, 2428331), (17, 1285587), (51, 428529), (83, 263313), (153, 142843), (249, 87771), (747, 29257), (1411, 15489), (1721, 12699), (4233, 5163)]