21476791

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2251}}^1$

素因数の和:2334

約数の個数: 16

約数和(自身を含む): 25943040

約数和(自身を除く): 4466249

約数列:

[1, 7, 29, 47, 203, 329, 1363, 2251, 9541, 15757, 65279, 105797, 456953, 740579, 3068113, 21476791]

約数ペア:

[(1, 21476791), (7, 3068113), (29, 740579), (47, 456953), (203, 105797), (329, 65279), (1363, 15757), (2251, 9541)]