21628221

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{1619}}^1$

素因数の和:1756

約数の個数: 16

約数和(自身を含む): 29730240

約数和(自身を除く): 8102019

約数列:

[1, 3, 61, 73, 183, 219, 1619, 4453, 4857, 13359, 98759, 118187, 296277, 354561, 7209407, 21628221]

約数ペア:

[(1, 21628221), (3, 7209407), (61, 354561), (73, 296277), (183, 118187), (219, 98759), (1619, 13359), (4453, 4857)]