68643705

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{20707}}^1$

素因数の和:20745

約数の個数: 32

約数和(自身を含む): 125241984

約数和(自身を除く): 56598279

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 20707, 62121, 103535, 269191, 310605, 352019, 807573, 1056057, 1345955, 1760095, 4037865, 4576247, 5280285, 13728741, 22881235, 68643705]

約数ペア:

[(1, 68643705), (3, 22881235), (5, 13728741), (13, 5280285), (15, 4576247), (17, 4037865), (39, 1760095), (51, 1345955), (65, 1056057), (85, 807573), (195, 352019), (221, 310605), (255, 269191), (663, 103535), (1105, 62121), (3315, 20707)]