19953921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{12479}}^1$

素因数の和:12536

約数の個数: 16

約数和(自身を含む): 29352960

約数和(自身を除く): 9399039

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 12479, 37437, 162227, 486681, 511639, 1534917, 6651307, 19953921]

約数ペア:

[(1, 19953921), (3, 6651307), (13, 1534917), (39, 511639), (41, 486681), (123, 162227), (533, 37437), (1599, 12479)]