81321864

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{260647}}^1$

素因数の和:260669

約数の個数: 32

約数和(自身を含む): 218944320

約数和(自身を除く): 137622456

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 260647, 521294, 781941, 1042588, 1563882, 2085176, 3127764, 3388411, 6255528, 6776822, 10165233, 13553644, 20330466, 27107288, 40660932, 81321864]

約数ペア:

[(1, 81321864), (2, 40660932), (3, 27107288), (4, 20330466), (6, 13553644), (8, 10165233), (12, 6776822), (13, 6255528), (24, 3388411), (26, 3127764), (39, 2085176), (52, 1563882), (78, 1042588), (104, 781941), (156, 521294), (312, 260647)]