21628225

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 27855360

約数和(自身を除く): 6227135

約数列:

[1, 5, 25, 47, 79, 233, 235, 395, 1165, 1175, 1975, 3713, 5825, 10951, 18407, 18565, 54755, 92035, 92825, 273775, 460175, 865129, 4325645, 21628225]

約数ペア:

[(1, 21628225), (5, 4325645), (25, 865129), (47, 460175), (79, 273775), (233, 92825), (235, 92035), (395, 54755), (1165, 18565), (1175, 18407), (1975, 10951), (3713, 5825)]