81389256

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{260863}}^1$

素因数の和:260885

約数の個数: 32

約数和(自身を含む): 219125760

約数和(自身を除く): 137736504

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 260863, 521726, 782589, 1043452, 1565178, 2086904, 3130356, 3391219, 6260712, 6782438, 10173657, 13564876, 20347314, 27129752, 40694628, 81389256]

約数ペア:

[(1, 81389256), (2, 40694628), (3, 27129752), (4, 20347314), (6, 13564876), (8, 10173657), (12, 6782438), (13, 6260712), (24, 3391219), (26, 3130356), (39, 2086904), (52, 1565178), (78, 1043452), (104, 782589), (156, 521726), (312, 260863)]