21398356

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{12953}}^1$

素因数の和:13023

約数の個数: 24

約数和(自身を含む): 43525440

約数和(自身を除く): 22127084

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1652, 12953, 25906, 51812, 90671, 181342, 362684, 764227, 1528454, 3056908, 5349589, 10699178, 21398356]

約数ペア:

[(1, 21398356), (2, 10699178), (4, 5349589), (7, 3056908), (14, 1528454), (28, 764227), (59, 362684), (118, 181342), (236, 90671), (413, 51812), (826, 25906), (1652, 12953)]