19885340

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 24144100

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 139, 230, 278, 311, 460, 556, 622, 695, 1244, 1390, 1555, 2780, 3110, 3197, 6220, 6394, 7153, 12788, 14306, 15985, 28612, 31970, 35765, 43229, 63940, 71530, 86458, 143060, 172916, 216145, 432290, 864580, 994267, 1988534, 3977068, 4971335, 9942670, 19885340]

約数ペア:

[(1, 19885340), (2, 9942670), (4, 4971335), (5, 3977068), (10, 1988534), (20, 994267), (23, 864580), (46, 432290), (92, 216145), (115, 172916), (139, 143060), (230, 86458), (278, 71530), (311, 63940), (460, 43229), (556, 35765), (622, 31970), (695, 28612), (1244, 15985), (1390, 14306), (1555, 12788), (2780, 7153), (3110, 6394), (3197, 6220)]