21423895

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{2081}}^1$

素因数の和:2186

約数の個数: 16

約数和(自身を含む): 26982720

約数和(自身を除く): 5558825

約数列:

[1, 5, 29, 71, 145, 355, 2059, 2081, 10295, 10405, 60349, 147751, 301745, 738755, 4284779, 21423895]

約数ペア:

[(1, 21423895), (5, 4284779), (29, 738755), (71, 301745), (145, 147751), (355, 60349), (2059, 10405), (2081, 10295)]