1991605

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{739}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 3036960

約数和(自身を除く): 1045355

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 739, 2695, 3695, 5173, 8129, 25865, 36211, 40645, 56903, 181055, 284515, 398321, 1991605]

約数ペア:

[(1, 1991605), (5, 398321), (7, 284515), (11, 181055), (35, 56903), (49, 40645), (55, 36211), (77, 25865), (245, 8129), (385, 5173), (539, 3695), (739, 2695)]