21319431

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13907}}^1$

素因数の和:13990

約数の個数: 16

約数和(自身を含む): 32934144

約数和(自身を除く): 11614713

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13907, 41721, 97349, 292047, 1015211, 3045633, 7106477, 21319431]

約数ペア:

[(1, 21319431), (3, 7106477), (7, 3045633), (21, 1015211), (73, 292047), (219, 97349), (511, 41721), (1533, 13907)]