21478664

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{141307}}^1$

素因数の和:141332

約数の個数: 16

約数和(自身を含む): 42392400

約数和(自身を除く): 20913736

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 141307, 282614, 565228, 1130456, 2684833, 5369666, 10739332, 21478664]

約数ペア:

[(1, 21478664), (2, 10739332), (4, 5369666), (8, 2684833), (19, 1130456), (38, 565228), (76, 282614), (152, 141307)]