81705375

素因数分解:

$3^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 154851840

約数和(自身を除く): 73146465

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 125, 129, 135, 215, 225, 375, 387, 563, 645, 675, 1075, 1125, 1161, 1689, 1935, 2815, 3225, 3375, 5067, 5375, 5805, 8445, 9675, 14075, 15201, 16125, 24209, 25335, 29025, 42225, 48375, 70375, 72627, 76005, 121045, 126675, 145125, 211125, 217881, 363135, 380025, 605225, 633375, 653643, 1089405, 1815675, 1900125, 3026125, 3268215, 5447025, 9078375, 16341075, 27235125, 81705375]

約数ペア:

[(1, 81705375), (3, 27235125), (5, 16341075), (9, 9078375), (15, 5447025), (25, 3268215), (27, 3026125), (43, 1900125), (45, 1815675), (75, 1089405), (125, 653643), (129, 633375), (135, 605225), (215, 380025), (225, 363135), (375, 217881), (387, 211125), (563, 145125), (645, 126675), (675, 121045), (1075, 76005), (1125, 72627), (1161, 70375), (1689, 48375), (1935, 42225), (2815, 29025), (3225, 25335), (3375, 24209), (5067, 16125), (5375, 15201), (5805, 14075), (8445, 9675)]