21785309

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5839}}^1$

素因数の和:5900

約数の個数: 16

約数和(自身を含む): 27471360

約数和(自身を除く): 5686051

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5839, 40873, 75907, 239399, 531349, 1675793, 3112187, 21785309]

約数ペア:

[(1, 21785309), (7, 3112187), (13, 1675793), (41, 531349), (91, 239399), (287, 75907), (533, 40873), (3731, 5839)]