20247195

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31391}}^1$

素因数の和:31442

約数の個数: 16

約数和(自身を含む): 33149952

約数和(自身を除く): 12902757

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31391, 94173, 156955, 470865, 1349813, 4049439, 6749065, 20247195]

約数ペア:

[(1, 20247195), (3, 6749065), (5, 4049439), (15, 1349813), (43, 470865), (129, 156955), (215, 94173), (645, 31391)]