19985273

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{937}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 25033344

約数和(自身を除く): 5048071

約数列:

[1, 7, 11, 77, 277, 937, 1939, 3047, 6559, 10307, 21329, 72149, 259549, 1816843, 2855039, 19985273]

約数ペア:

[(1, 19985273), (7, 2855039), (11, 1816843), (77, 259549), (277, 72149), (937, 21329), (1939, 10307), (3047, 6559)]