21986254

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{2707}}^1$

素因数の和:2871

約数の個数: 16

約数和(自身を含む): 34315776

約数和(自身を除く): 12329522

約数列:

[1, 2, 31, 62, 131, 262, 2707, 4061, 5414, 8122, 83917, 167834, 354617, 709234, 10993127, 21986254]

約数ペア:

[(1, 21986254), (2, 10993127), (31, 709234), (62, 354617), (131, 167834), (262, 83917), (2707, 8122), (4061, 5414)]