66664405

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1\times {\mathrm{997}}^1$

素因数の和:1356

約数の個数: 16

約数和(自身を含む): 82203264

約数和(自身を除く): 15538859

約数列:

[1, 5, 43, 215, 311, 997, 1555, 4985, 13373, 42871, 66865, 214355, 310067, 1550335, 13332881, 66664405]

約数ペア:

[(1, 66664405), (5, 13332881), (43, 1550335), (215, 310067), (311, 214355), (997, 66865), (1555, 42871), (4985, 13373)]