21195305

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{2333}}^1$

素因数の和:2440

約数の個数: 16

約数和(自身を含む): 26887680

約数和(自身を除く): 5692375

約数列:

[1, 5, 23, 79, 115, 395, 1817, 2333, 9085, 11665, 53659, 184307, 268295, 921535, 4239061, 21195305]

約数ペア:

[(1, 21195305), (5, 4239061), (23, 921535), (79, 268295), (115, 184307), (395, 53659), (1817, 11665), (2333, 9085)]