20326915

素因数分解:

$5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{509}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 28604880

約数和(自身を除く): 8277965

約数列:

[1, 5, 7, 35, 49, 163, 245, 509, 815, 1141, 2545, 3563, 5705, 7987, 17815, 24941, 39935, 82967, 124705, 414835, 580769, 2903845, 4065383, 20326915]

約数ペア:

[(1, 20326915), (5, 4065383), (7, 2903845), (35, 580769), (49, 414835), (163, 124705), (245, 82967), (509, 39935), (815, 24941), (1141, 17815), (2545, 7987), (3563, 5705)]