20121959

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{631}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 23783424

約数和(自身を除く): 3661465

約数列:

[1, 11, 13, 143, 223, 631, 2453, 2899, 6941, 8203, 31889, 90233, 140713, 1547843, 1829269, 20121959]

約数ペア:

[(1, 20121959), (11, 1829269), (13, 1547843), (143, 140713), (223, 90233), (631, 31889), (2453, 8203), (2899, 6941)]