21274165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{613}}^1\times {\mathrm{631}}^1$

素因数の和:1260

約数の個数: 16

約数和(自身を含む): 27939456

約数和(自身を除く): 6665291

約数列:

[1, 5, 11, 55, 613, 631, 3065, 3155, 6743, 6941, 33715, 34705, 386803, 1934015, 4254833, 21274165]

約数ペア:

[(1, 21274165), (5, 4254833), (11, 1934015), (55, 386803), (613, 34705), (631, 33715), (3065, 6941), (3155, 6743)]