1681225

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{739}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 2569280

約数和(自身を除く): 888055

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 739, 2275, 3695, 5173, 9607, 18475, 25865, 48035, 67249, 129325, 240175, 336245, 1681225]

約数ペア:

[(1, 1681225), (5, 336245), (7, 240175), (13, 129325), (25, 67249), (35, 48035), (65, 25865), (91, 18475), (175, 9607), (325, 5173), (455, 3695), (739, 2275)]