20217818

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{823}}^1$

素因数の和:1069

約数の個数: 16

約数和(自身を含む): 30969216

約数和(自身を除く): 10751398

約数列:

[1, 2, 71, 142, 173, 346, 823, 1646, 12283, 24566, 58433, 116866, 142379, 284758, 10108909, 20217818]

約数ペア:

[(1, 20217818), (2, 10108909), (71, 284758), (142, 142379), (173, 116866), (346, 58433), (823, 24566), (1646, 12283)]