7820625

素因数分解:

$3^1\times 5^4\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:163

約数の個数: 40

約数和(自身を含む): 13470688

約数和(自身を除く): 5650063

約数列:

[1, 3, 5, 15, 25, 43, 75, 97, 125, 129, 215, 291, 375, 485, 625, 645, 1075, 1455, 1875, 2425, 3225, 4171, 5375, 7275, 12125, 12513, 16125, 20855, 26875, 36375, 60625, 62565, 80625, 104275, 181875, 312825, 521375, 1564125, 2606875, 7820625]

約数ペア:

[(1, 7820625), (3, 2606875), (5, 1564125), (15, 521375), (25, 312825), (43, 181875), (75, 104275), (97, 80625), (125, 62565), (129, 60625), (215, 36375), (291, 26875), (375, 20855), (485, 16125), (625, 12513), (645, 12125), (1075, 7275), (1455, 5375), (1875, 4171), (2425, 3225)]