21129742

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{8753}}^1$

素因数の和:8843

約数の個数: 16

約数和(自身を含む): 34035552

約数和(自身を除く): 12905810

約数列:

[1, 2, 17, 34, 71, 142, 1207, 2414, 8753, 17506, 148801, 297602, 621463, 1242926, 10564871, 21129742]

約数ペア:

[(1, 21129742), (2, 10564871), (17, 1242926), (34, 621463), (71, 297602), (142, 148801), (1207, 17506), (2414, 8753)]