21890956

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{929}}^1$

素因数の和:1113

約数の個数: 24

約数和(自身を含む): 39528720

約数和(自身を除く): 17637764

約数列:

[1, 2, 4, 43, 86, 137, 172, 274, 548, 929, 1858, 3716, 5891, 11782, 23564, 39947, 79894, 127273, 159788, 254546, 509092, 5472739, 10945478, 21890956]

約数ペア:

[(1, 21890956), (2, 10945478), (4, 5472739), (43, 509092), (86, 254546), (137, 159788), (172, 127273), (274, 79894), (548, 39947), (929, 23564), (1858, 11782), (3716, 5891)]