21348481

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 28864512

約数和(自身を除く): 7516031

約数列:

[1, 7, 11, 17, 47, 77, 119, 187, 329, 347, 517, 799, 1309, 2429, 3619, 3817, 5593, 5899, 8789, 16309, 26719, 41293, 61523, 64889, 114163, 179399, 277253, 454223, 1255793, 1940771, 3049783, 21348481]

約数ペア:

[(1, 21348481), (7, 3049783), (11, 1940771), (17, 1255793), (47, 454223), (77, 277253), (119, 179399), (187, 114163), (329, 64889), (347, 61523), (517, 41293), (799, 26719), (1309, 16309), (2429, 8789), (3619, 5899), (3817, 5593)]