21262015

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{593}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 26174016

約数和(自身を除く): 4912001

約数列:

[1, 5, 71, 101, 355, 505, 593, 2965, 7171, 35855, 42103, 59893, 210515, 299465, 4252403, 21262015]

約数ペア:

[(1, 21262015), (5, 4252403), (71, 299465), (101, 210515), (355, 59893), (505, 42103), (593, 35855), (2965, 7171)]