21099145

素因数分解:

$5^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1$

素因数の和:504

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4705655

約数列:

[1, 5, 127, 149, 223, 635, 745, 1115, 18923, 28321, 33227, 94615, 141605, 166135, 4219829, 21099145]

約数ペア:

[(1, 21099145), (5, 4219829), (127, 166135), (149, 141605), (223, 94615), (635, 33227), (745, 28321), (1115, 18923)]