81235856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7369}}^1$

素因数の和:7443

約数の個数: 40

約数和(自身を含む): 172723320

約数和(自身を除く): 91487464

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 2756, 5512, 7369, 11024, 14738, 29476, 58952, 95797, 117904, 191594, 383188, 390557, 766376, 781114, 1532752, 1562228, 3124456, 5077241, 6248912, 10154482, 20308964, 40617928, 81235856]

約数ペア:

[(1, 81235856), (2, 40617928), (4, 20308964), (8, 10154482), (13, 6248912), (16, 5077241), (26, 3124456), (52, 1562228), (53, 1532752), (104, 781114), (106, 766376), (208, 390557), (212, 383188), (424, 191594), (689, 117904), (848, 95797), (1378, 58952), (2756, 29476), (5512, 14738), (7369, 11024)]