21262605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 43104768

約数和(自身を除く): 21842163

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 37, 39, 65, 91, 105, 111, 185, 195, 259, 273, 421, 455, 481, 555, 777, 1263, 1295, 1365, 1443, 2105, 2405, 2947, 3367, 3885, 5473, 6315, 7215, 8841, 10101, 14735, 15577, 16419, 16835, 27365, 38311, 44205, 46731, 50505, 77885, 82095, 109039, 114933, 191555, 202501, 233655, 327117, 545195, 574665, 607503, 1012505, 1417507, 1635585, 3037515, 4252521, 7087535, 21262605]

約数ペア:

[(1, 21262605), (3, 7087535), (5, 4252521), (7, 3037515), (13, 1635585), (15, 1417507), (21, 1012505), (35, 607503), (37, 574665), (39, 545195), (65, 327117), (91, 233655), (105, 202501), (111, 191555), (185, 114933), (195, 109039), (259, 82095), (273, 77885), (421, 50505), (455, 46731), (481, 44205), (555, 38311), (777, 27365), (1263, 16835), (1295, 16419), (1365, 15577), (1443, 14735), (2105, 10101), (2405, 8841), (2947, 7215), (3367, 6315), (3885, 5473)]