19713551

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4447}}^1$

素因数の和:4502

約数の個数: 16

約数和(自身を含む): 23912448

約数和(自身を除く): 4198897

約数列:

[1, 11, 13, 31, 143, 341, 403, 4433, 4447, 48917, 57811, 137857, 635921, 1516427, 1792141, 19713551]

約数ペア:

[(1, 19713551), (11, 1792141), (13, 1516427), (31, 635921), (143, 137857), (341, 57811), (403, 48917), (4433, 4447)]