21378063

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{6323}}^1$

素因数の和:6363

約数の個数: 24

約数和(自身を含む): 34604928

約数和(自身を除く): 13226865

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 483, 1127, 3381, 6323, 18969, 44261, 132783, 145429, 309827, 436287, 929481, 1018003, 3054009, 7126021, 21378063]

約数ペア:

[(1, 21378063), (3, 7126021), (7, 3054009), (21, 1018003), (23, 929481), (49, 436287), (69, 309827), (147, 145429), (161, 132783), (483, 44261), (1127, 18969), (3381, 6323)]