21242403

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{701}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 17597853

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 701, 777, 819, 1443, 2103, 2331, 3367, 4329, 4907, 6309, 9113, 10101, 14721, 25937, 27339, 30303, 44163, 63791, 77811, 82017, 181559, 191373, 233433, 337181, 544677, 574119, 1011543, 1634031, 2360267, 3034629, 7080801, 21242403]

約数ペア:

[(1, 21242403), (3, 7080801), (7, 3034629), (9, 2360267), (13, 1634031), (21, 1011543), (37, 574119), (39, 544677), (63, 337181), (91, 233433), (111, 191373), (117, 181559), (259, 82017), (273, 77811), (333, 63791), (481, 44163), (701, 30303), (777, 27339), (819, 25937), (1443, 14721), (2103, 10101), (2331, 9113), (3367, 6309), (4329, 4907)]