21383481

素因数分解:

$3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{6247}}^1$

素因数の和:6420

約数の個数: 16

約数和(自身を含む): 32789504

約数和(自身を除く): 11406023

約数列:

[1, 3, 7, 21, 163, 489, 1141, 3423, 6247, 18741, 43729, 131187, 1018261, 3054783, 7127827, 21383481]

約数ペア:

[(1, 21383481), (3, 7127827), (7, 3054783), (21, 1018261), (163, 131187), (489, 43729), (1141, 18741), (3423, 6247)]