21698864

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{123289}}^1$

素因数の和:123308

約数の個数: 20

約数和(自身を含む): 45863880

約数和(自身を除く): 24165016

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 123289, 246578, 493156, 986312, 1356179, 1972624, 2712358, 5424716, 10849432, 21698864]

約数ペア:

[(1, 21698864), (2, 10849432), (4, 5424716), (8, 2712358), (11, 1972624), (16, 1356179), (22, 986312), (44, 493156), (88, 246578), (176, 123289)]