20946783

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 33126912

約数和(自身を除く): 12180129

約数列:

[1, 3, 11, 13, 33, 39, 143, 157, 311, 429, 471, 933, 1727, 2041, 3421, 4043, 5181, 6123, 10263, 12129, 22451, 44473, 48827, 67353, 133419, 146481, 537097, 634751, 1611291, 1904253, 6982261, 20946783]

約数ペア:

[(1, 20946783), (3, 6982261), (11, 1904253), (13, 1611291), (33, 634751), (39, 537097), (143, 146481), (157, 133419), (311, 67353), (429, 48827), (471, 44473), (933, 22451), (1727, 12129), (2041, 10263), (3421, 6123), (4043, 5181)]