21262064

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69941}}^1$

素因数の和:69968

約数の個数: 20

約数和(自身を含む): 43364040

約数和(自身を除く): 22101976

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69941, 139882, 279764, 559528, 1119056, 1328879, 2657758, 5315516, 10631032, 21262064]

約数ペア:

[(1, 21262064), (2, 10631032), (4, 5315516), (8, 2657758), (16, 1328879), (19, 1119056), (38, 559528), (76, 279764), (152, 139882), (304, 69941)]