40306721

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{691}}^1$

素因数の和:1352

約数の個数: 16

約数和(自身を含む): 49757568

約数和(自身を除く): 9450847

約数列:

[1, 7, 13, 91, 641, 691, 4487, 4837, 8333, 8983, 58331, 62881, 442931, 3100517, 5758103, 40306721]

約数ペア:

[(1, 40306721), (7, 5758103), (13, 3100517), (91, 442931), (641, 62881), (691, 58331), (4487, 8983), (4837, 8333)]