215721355

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{3919}}^1$

素因数の和:4134

約数の個数: 16

約数和(自身を含む): 263894400

約数和(自身を除く): 48173045

約数列:

[1, 5, 101, 109, 505, 545, 3919, 11009, 19595, 55045, 395819, 427171, 1979095, 2135855, 43144271, 215721355]

約数ペア:

[(1, 215721355), (5, 43144271), (101, 2135855), (109, 1979095), (505, 427171), (545, 395819), (3919, 55045), (11009, 19595)]