2159905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:416

約数の個数: 16

約数和(自身を含む): 2856384

約数和(自身を除く): 696479

約数列:

[1, 5, 11, 55, 173, 227, 865, 1135, 1903, 2497, 9515, 12485, 39271, 196355, 431981, 2159905]

約数ペア:

[(1, 2159905), (5, 431981), (11, 196355), (55, 39271), (173, 12485), (227, 9515), (865, 2497), (1135, 1903)]