20997171

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{367}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 33797120

約数和(自身を除く): 12799949

約数列:

[1, 3, 9, 13, 27, 39, 117, 163, 351, 367, 489, 1101, 1467, 2119, 3303, 4401, 4771, 6357, 9909, 14313, 19071, 42939, 57213, 59821, 128817, 179463, 538389, 777673, 1615167, 2333019, 6999057, 20997171]

約数ペア:

[(1, 20997171), (3, 6999057), (9, 2333019), (13, 1615167), (27, 777673), (39, 538389), (117, 179463), (163, 128817), (351, 59821), (367, 57213), (489, 42939), (1101, 19071), (1467, 14313), (2119, 9909), (3303, 6357), (4401, 4771)]