81291288

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{260549}}^1$

素因数の和:260571

約数の個数: 32

約数和(自身を含む): 218862000

約数和(自身を除く): 137570712

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 260549, 521098, 781647, 1042196, 1563294, 2084392, 3126588, 3387137, 6253176, 6774274, 10161411, 13548548, 20322822, 27097096, 40645644, 81291288]

約数ペア:

[(1, 81291288), (2, 40645644), (3, 27097096), (4, 20322822), (6, 13548548), (8, 10161411), (12, 6774274), (13, 6253176), (24, 3387137), (26, 3126588), (39, 2084392), (52, 1563294), (78, 1042196), (104, 781647), (156, 521098), (312, 260549)]