20276865

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:563

約数の個数: 64

約数和(自身を含む): 42240000

約数和(自身を除く): 21963135

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 105, 129, 135, 189, 215, 301, 315, 387, 499, 645, 903, 945, 1161, 1497, 1505, 1935, 2495, 2709, 3493, 4491, 4515, 5805, 7485, 8127, 10479, 13473, 13545, 17465, 21457, 22455, 31437, 40635, 52395, 64371, 67365, 94311, 107285, 150199, 157185, 193113, 321855, 450597, 471555, 579339, 750995, 965565, 1351791, 2252985, 2896695, 4055373, 6758955, 20276865]

約数ペア:

[(1, 20276865), (3, 6758955), (5, 4055373), (7, 2896695), (9, 2252985), (15, 1351791), (21, 965565), (27, 750995), (35, 579339), (43, 471555), (45, 450597), (63, 321855), (105, 193113), (129, 157185), (135, 150199), (189, 107285), (215, 94311), (301, 67365), (315, 64371), (387, 52395), (499, 40635), (645, 31437), (903, 22455), (945, 21457), (1161, 17465), (1497, 13545), (1505, 13473), (1935, 10479), (2495, 8127), (2709, 7485), (3493, 5805), (4491, 4515)]