64971305

素因数分解:

$5^1\times 7^2\times {\mathrm{509}}^1\times {\mathrm{521}}^1$

素因数の和:1049

約数の個数: 24

約数和(自身を含む): 91047240

約数和(自身を除く): 26075935

約数列:

[1, 5, 7, 35, 49, 245, 509, 521, 2545, 2605, 3563, 3647, 17815, 18235, 24941, 25529, 124705, 127645, 265189, 1325945, 1856323, 9281615, 12994261, 64971305]

約数ペア:

[(1, 64971305), (5, 12994261), (7, 9281615), (35, 1856323), (49, 1325945), (245, 265189), (509, 127645), (521, 124705), (2545, 25529), (2605, 24941), (3563, 18235), (3647, 17815)]