21274040

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5483}}^1$

素因数の和:5591

約数の個数: 32

約数和(自身を含む): 48368880

約数和(自身を除く): 27094840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5483, 10966, 21932, 27415, 43864, 54830, 109660, 219320, 531851, 1063702, 2127404, 2659255, 4254808, 5318510, 10637020, 21274040]

約数ペア:

[(1, 21274040), (2, 10637020), (4, 5318510), (5, 4254808), (8, 2659255), (10, 2127404), (20, 1063702), (40, 531851), (97, 219320), (194, 109660), (388, 54830), (485, 43864), (776, 27415), (970, 21932), (1940, 10966), (3880, 5483)]