21518609

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1493}}^1$

素因数の和:1600

約数の個数: 16

約数和(自身を含む): 25816320

約数和(自身を除く): 4297711

約数列:

[1, 7, 29, 71, 203, 497, 1493, 2059, 10451, 14413, 43297, 106003, 303079, 742021, 3074087, 21518609]

約数ペア:

[(1, 21518609), (7, 3074087), (29, 742021), (71, 303079), (203, 106003), (497, 43297), (1493, 14413), (2059, 10451)]