21274135

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{409}}^1$

素因数の和:618

約数の個数: 16

約数和(自身を含む): 26095680

約数和(自身を除く): 4821545

約数列:

[1, 5, 101, 103, 409, 505, 515, 2045, 10403, 41309, 42127, 52015, 206545, 210635, 4254827, 21274135]

約数ペア:

[(1, 21274135), (5, 4254827), (101, 210635), (103, 206545), (409, 52015), (505, 42127), (515, 41309), (2045, 10403)]