21239536

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19813}}^1$

素因数の和:19888

約数の個数: 20

約数和(自身を含む): 41767912

約数和(自身を除く): 20528376

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19813, 39626, 79252, 158504, 317008, 1327471, 2654942, 5309884, 10619768, 21239536]

約数ペア:

[(1, 21239536), (2, 10619768), (4, 5309884), (8, 2654942), (16, 1327471), (67, 317008), (134, 158504), (268, 79252), (536, 39626), (1072, 19813)]