21664617

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:234

約数の個数: 32

約数和(自身を含む): 33129600

約数和(自身を除く): 11464983

約数列:

[1, 3, 13, 19, 39, 57, 169, 173, 247, 507, 519, 741, 2197, 2249, 3211, 3287, 6591, 6747, 9633, 9861, 29237, 41743, 42731, 87711, 125229, 128193, 380081, 555503, 1140243, 1666509, 7221539, 21664617]

約数ペア:

[(1, 21664617), (3, 7221539), (13, 1666509), (19, 1140243), (39, 555503), (57, 380081), (169, 128193), (173, 125229), (247, 87711), (507, 42731), (519, 41743), (741, 29237), (2197, 9861), (2249, 9633), (3211, 6747), (3287, 6591)]