20722015

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{373}}^1$

素因数の和:690

約数の個数: 16

約数和(自身を含む): 25635456

約数和(自身を除く): 4913441

約数列:

[1, 5, 41, 205, 271, 373, 1355, 1865, 11111, 15293, 55555, 76465, 101083, 505415, 4144403, 20722015]

約数ペア:

[(1, 20722015), (5, 4144403), (41, 505415), (205, 101083), (271, 76465), (373, 55555), (1355, 15293), (1865, 11111)]