21249022

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{991}}^1$

素因数の和:1215

約数の個数: 16

約数和(自身を含む): 32569344

約数和(自身を除く): 11320322

約数列:

[1, 2, 71, 142, 151, 302, 991, 1982, 10721, 21442, 70361, 140722, 149641, 299282, 10624511, 21249022]

約数ペア:

[(1, 21249022), (2, 10624511), (71, 299282), (142, 149641), (151, 140722), (302, 70361), (991, 21442), (1982, 10721)]