21029105

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5399}}^1$

素因数の和:5464

約数の個数: 16

約数和(自身を含む): 27216000

約数和(自身を除く): 6186895

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5399, 26995, 102581, 221359, 512905, 1106795, 4205821, 21029105]

約数ペア:

[(1, 21029105), (5, 4205821), (19, 1106795), (41, 512905), (95, 221359), (205, 102581), (779, 26995), (3895, 5399)]