21198537

素因数分解:

$3^3\times {\mathrm{61}}^2\times {\mathrm{211}}^1$

素因数の和:342

約数の個数: 24

約数和(自身を含む): 32079840

約数和(自身を除く): 10881303

約数列:

[1, 3, 9, 27, 61, 183, 211, 549, 633, 1647, 1899, 3721, 5697, 11163, 12871, 33489, 38613, 100467, 115839, 347517, 785131, 2355393, 7066179, 21198537]

約数ペア:

[(1, 21198537), (3, 7066179), (9, 2355393), (27, 785131), (61, 347517), (183, 115839), (211, 100467), (549, 38613), (633, 33489), (1647, 12871), (1899, 11163), (3721, 5697)]