21407973

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{1531}}^1$

素因数の和:1672

約数の個数: 16

約数和(自身を含む): 29414400

約数和(自身を除く): 8006427

約数列:

[1, 3, 59, 79, 177, 237, 1531, 4593, 4661, 13983, 90329, 120949, 270987, 362847, 7135991, 21407973]

約数ペア:

[(1, 21407973), (3, 7135991), (59, 362847), (79, 270987), (177, 120949), (237, 90329), (1531, 13983), (4593, 4661)]