81991875

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{6247}}^1$

素因数の和:6277

約数の個数: 40

約数和(自身を含む): 156150016

約数和(自身を除く): 74158141

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 625, 875, 1875, 2625, 4375, 6247, 13125, 18741, 31235, 43729, 93705, 131187, 156175, 218645, 468525, 655935, 780875, 1093225, 2342625, 3279675, 3904375, 5466125, 11713125, 16398375, 27330625, 81991875]

約数ペア:

[(1, 81991875), (3, 27330625), (5, 16398375), (7, 11713125), (15, 5466125), (21, 3904375), (25, 3279675), (35, 2342625), (75, 1093225), (105, 780875), (125, 655935), (175, 468525), (375, 218645), (525, 156175), (625, 131187), (875, 93705), (1875, 43729), (2625, 31235), (4375, 18741), (6247, 13125)]