19801964

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{54401}}^1$

素因数の和:54425

約数の個数: 24

約数和(自身を含む): 42651168

約数和(自身を除く): 22849204

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 54401, 108802, 217604, 380807, 707213, 761614, 1414426, 1523228, 2828852, 4950491, 9900982, 19801964]

約数ペア:

[(1, 19801964), (2, 9900982), (4, 4950491), (7, 2828852), (13, 1523228), (14, 1414426), (26, 761614), (28, 707213), (52, 380807), (91, 217604), (182, 108802), (364, 54401)]