20913995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7937}}^1$

素因数の和:7990

約数の個数: 16

約数和(自身を含む): 27433728

約数和(自身を除く): 6519733

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7937, 39685, 134929, 246047, 674645, 1230235, 4182799, 20913995]

約数ペア:

[(1, 20913995), (5, 4182799), (17, 1230235), (31, 674645), (85, 246047), (155, 134929), (527, 39685), (2635, 7937)]