20862513

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{601}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 37564800

約数和(自身を除く): 16702287

約数列:

[1, 3, 7, 9, 19, 21, 29, 57, 63, 87, 133, 171, 203, 261, 399, 551, 601, 609, 1197, 1653, 1803, 1827, 3857, 4207, 4959, 5409, 11419, 11571, 12621, 17429, 34257, 34713, 37863, 52287, 79933, 102771, 122003, 156861, 239799, 331151, 366009, 719397, 993453, 1098027, 2318057, 2980359, 6954171, 20862513]

約数ペア:

[(1, 20862513), (3, 6954171), (7, 2980359), (9, 2318057), (19, 1098027), (21, 993453), (29, 719397), (57, 366009), (63, 331151), (87, 239799), (133, 156861), (171, 122003), (203, 102771), (261, 79933), (399, 52287), (551, 37863), (601, 34713), (609, 34257), (1197, 17429), (1653, 12621), (1803, 11571), (1827, 11419), (3857, 5409), (4207, 4959)]