725625

素因数分解:

$3^3\times 5^4\times {\mathrm{43}}^1$

素因数の和:72

約数の個数: 40

約数和(自身を含む): 1374560

約数和(自身を除く): 648935

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 125, 129, 135, 215, 225, 375, 387, 625, 645, 675, 1075, 1125, 1161, 1875, 1935, 3225, 3375, 5375, 5625, 5805, 9675, 16125, 16875, 26875, 29025, 48375, 80625, 145125, 241875, 725625]

約数ペア:

[(1, 725625), (3, 241875), (5, 145125), (9, 80625), (15, 48375), (25, 29025), (27, 26875), (43, 16875), (45, 16125), (75, 9675), (125, 5805), (129, 5625), (135, 5375), (215, 3375), (225, 3225), (375, 1935), (387, 1875), (625, 1161), (645, 1125), (675, 1075)]