21656979

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3089}}^1$

素因数の和:3155

約数の個数: 24

約数和(自身を含む): 33742800

約数和(自身を除く): 12085821

約数列:

[1, 3, 9, 19, 41, 57, 123, 171, 369, 779, 2337, 3089, 7011, 9267, 27801, 58691, 126649, 176073, 379947, 528219, 1139841, 2406331, 7218993, 21656979]

約数ペア:

[(1, 21656979), (3, 7218993), (9, 2406331), (19, 1139841), (41, 528219), (57, 379947), (123, 176073), (171, 126649), (369, 58691), (779, 27801), (2337, 9267), (3089, 7011)]