21432621

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{12919}}^1$

素因数の和:13008

約数の個数: 16

約数和(自身を含む): 33075200

約数和(自身を除く): 11642579

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 12919, 38757, 90433, 271299, 1020601, 3061803, 7144207, 21432621]

約数ペア:

[(1, 21432621), (3, 7144207), (7, 3061803), (21, 1020601), (79, 271299), (237, 90433), (553, 38757), (1659, 12919)]