20856927

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4021}}^1$

素因数の和:4063

約数の個数: 32

約数和(自身を含む): 36037120

約数和(自身を除く): 15180193

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4021, 5187, 12063, 28147, 52273, 76399, 84441, 156819, 229197, 365911, 534793, 993187, 1097733, 1604379, 2979561, 6952309, 20856927]

約数ペア:

[(1, 20856927), (3, 6952309), (7, 2979561), (13, 1604379), (19, 1097733), (21, 993187), (39, 534793), (57, 365911), (91, 229197), (133, 156819), (247, 84441), (273, 76399), (399, 52273), (741, 28147), (1729, 12063), (4021, 5187)]