21535015

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1\times {\mathrm{691}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 27104256

約数和(自身を除く): 5569241

約数列:

[1, 5, 23, 115, 271, 691, 1355, 3455, 6233, 15893, 31165, 79465, 187261, 936305, 4307003, 21535015]

約数ペア:

[(1, 21535015), (5, 4307003), (23, 936305), (115, 187261), (271, 79465), (691, 31165), (1355, 15893), (3455, 6233)]