21952539

素因数分解:

$3^4\times 7^2\times {\mathrm{5531}}^1$

素因数の和:5557

約数の個数: 30

約数和(自身を含む): 38154204

約数和(自身を除く): 16201665

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5531, 16593, 38717, 49779, 116151, 149337, 271019, 348453, 448011, 813057, 1045359, 2439171, 3136077, 7317513, 21952539]

約数ペア:

[(1, 21952539), (3, 7317513), (7, 3136077), (9, 2439171), (21, 1045359), (27, 813057), (49, 448011), (63, 348453), (81, 271019), (147, 149337), (189, 116151), (441, 49779), (567, 38717), (1323, 16593), (3969, 5531)]