18890968

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{38711}}^1$

素因数の和:38778

約数の個数: 16

約数和(自身を含む): 36002160

約数和(自身を除く): 17111192

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 38711, 77422, 154844, 309688, 2361371, 4722742, 9445484, 18890968]

約数ペア:

[(1, 18890968), (2, 9445484), (4, 4722742), (8, 2361371), (61, 309688), (122, 154844), (244, 77422), (488, 38711)]