21119536

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30697}}^1$

素因数の和:30748

約数の個数: 20

約数和(自身を含む): 41872072

約数和(自身を除く): 20752536

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30697, 61394, 122788, 245576, 491152, 1319971, 2639942, 5279884, 10559768, 21119536]

約数ペア:

[(1, 21119536), (2, 10559768), (4, 5279884), (8, 2639942), (16, 1319971), (43, 491152), (86, 245576), (172, 122788), (344, 61394), (688, 30697)]