21515810

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{673}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 40763520

約数和(自身を除く): 19247710

約数列:

[1, 2, 5, 10, 23, 46, 115, 139, 230, 278, 673, 695, 1346, 1390, 3197, 3365, 6394, 6730, 15479, 15985, 30958, 31970, 77395, 93547, 154790, 187094, 467735, 935470, 2151581, 4303162, 10757905, 21515810]

約数ペア:

[(1, 21515810), (2, 10757905), (5, 4303162), (10, 2151581), (23, 935470), (46, 467735), (115, 187094), (139, 154790), (230, 93547), (278, 77395), (673, 31970), (695, 30958), (1346, 15985), (1390, 15479), (3197, 6730), (3365, 6394)]