21203434

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20747}}^1$

素因数の和:20829

約数の個数: 16

約数和(自身を含む): 36848448

約数和(自身を除く): 15645014

約数列:

[1, 2, 7, 14, 73, 146, 511, 1022, 20747, 41494, 145229, 290458, 1514531, 3029062, 10601717, 21203434]

約数ペア:

[(1, 21203434), (2, 10601717), (7, 3029062), (14, 1514531), (73, 290458), (146, 145229), (511, 41494), (1022, 20747)]