212121

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:70

約数の個数: 36

約数和(自身を含む): 394212

約数和(自身を除く): 182091

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 49, 63, 91, 111, 117, 147, 259, 273, 333, 441, 481, 637, 777, 819, 1443, 1813, 1911, 2331, 3367, 4329, 5439, 5733, 10101, 16317, 23569, 30303, 70707, 212121]

約数ペア:

[(1, 212121), (3, 70707), (7, 30303), (9, 23569), (13, 16317), (21, 10101), (37, 5733), (39, 5439), (49, 4329), (63, 3367), (91, 2331), (111, 1911), (117, 1813), (147, 1443), (259, 819), (273, 777), (333, 637), (441, 481)]