21425397

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{6337}}^1$

素因数の和:6377

約数の個数: 24

約数和(自身を含む): 34681536

約数和(自身を除く): 13256139

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 483, 1127, 3381, 6337, 19011, 44359, 133077, 145751, 310513, 437253, 931539, 1020257, 3060771, 7141799, 21425397]

約数ペア:

[(1, 21425397), (3, 7141799), (7, 3060771), (21, 1020257), (23, 931539), (49, 437253), (69, 310513), (147, 145751), (161, 133077), (483, 44359), (1127, 19011), (3381, 6337)]