51720981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{8447}}^1$

素因数の和:8620

約数の個数: 16

約数和(自身を含む): 74747904

約数和(自身を除く): 23026923

約数列:

[1, 3, 13, 39, 157, 471, 2041, 6123, 8447, 25341, 109811, 329433, 1326179, 3978537, 17240327, 51720981]

約数ペア:

[(1, 51720981), (3, 17240327), (13, 3978537), (39, 1326179), (157, 329433), (471, 109811), (2041, 25341), (6123, 8447)]