21103191

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{443}}^1$

素因数の和:595

約数の個数: 24

約数和(自身を含む): 31399680

約数和(自身を除く): 10296489

約数列:

[1, 3, 9, 67, 79, 201, 237, 443, 603, 711, 1329, 3987, 5293, 15879, 29681, 34997, 47637, 89043, 104991, 267129, 314973, 2344799, 7034397, 21103191]

約数ペア:

[(1, 21103191), (3, 7034397), (9, 2344799), (67, 314973), (79, 267129), (201, 104991), (237, 89043), (443, 47637), (603, 34997), (711, 29681), (1329, 15879), (3987, 5293)]