21686091

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{15413}}^1$

素因数の和:15490

約数の個数: 16

約数和(自身を含む): 33540864

約数和(自身を除く): 11854773

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 15413, 46239, 107891, 323673, 1032671, 3098013, 7228697, 21686091]

約数ペア:

[(1, 21686091), (3, 7228697), (7, 3098013), (21, 1032671), (67, 323673), (201, 107891), (469, 46239), (1407, 15413)]