81036875

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:329

約数の個数: 40

約数和(自身を含む): 111339360

約数和(自身を除く): 30302485

約数列:

[1, 5, 17, 25, 29, 85, 125, 145, 263, 425, 493, 625, 725, 1315, 2125, 2465, 3625, 4471, 6575, 7627, 10625, 12325, 18125, 22355, 32875, 38135, 61625, 111775, 129659, 164375, 190675, 308125, 558875, 648295, 953375, 2794375, 3241475, 4766875, 16207375, 81036875]

約数ペア:

[(1, 81036875), (5, 16207375), (17, 4766875), (25, 3241475), (29, 2794375), (85, 953375), (125, 648295), (145, 558875), (263, 308125), (425, 190675), (493, 164375), (625, 129659), (725, 111775), (1315, 61625), (2125, 38135), (2465, 32875), (3625, 22355), (4471, 18125), (6575, 12325), (7627, 10625)]