139390551

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{28211}}^1$

素因数の和:28284

約数の個数: 20

約数和(自身を含む): 211646424

約数和(自身を除く): 72255873

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 4941, 28211, 84633, 253899, 761697, 1720871, 2285091, 5162613, 15487839, 46463517, 139390551]

約数ペア:

[(1, 139390551), (3, 46463517), (9, 15487839), (27, 5162613), (61, 2285091), (81, 1720871), (183, 761697), (549, 253899), (1647, 84633), (4941, 28211)]