21601821

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2741}}^1$

素因数の和:2852

約数の個数: 16

約数和(自身を含む): 30008448

約数和(自身を除く): 8406627

約数列:

[1, 3, 37, 71, 111, 213, 2627, 2741, 7881, 8223, 101417, 194611, 304251, 583833, 7200607, 21601821]

約数ペア:

[(1, 21601821), (3, 7200607), (37, 583833), (71, 304251), (111, 194611), (213, 101417), (2627, 8223), (2741, 7881)]