1390431

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{907}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 2150144

約数和(自身を除く): 759713

約数列:

[1, 3, 7, 21, 73, 219, 511, 907, 1533, 2721, 6349, 19047, 66211, 198633, 463477, 1390431]

約数ペア:

[(1, 1390431), (3, 463477), (7, 198633), (21, 66211), (73, 19047), (219, 6349), (511, 2721), (907, 1533)]