21128637

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{4271}}^1$

素因数の和:4388

約数の個数: 16

約数和(自身を含む): 30143232

約数和(自身を除く): 9014595

約数列:

[1, 3, 17, 51, 97, 291, 1649, 4271, 4947, 12813, 72607, 217821, 414287, 1242861, 7042879, 21128637]

約数ペア:

[(1, 21128637), (3, 7042879), (17, 1242861), (51, 414287), (97, 217821), (291, 72607), (1649, 12813), (4271, 4947)]