20608700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:579

約数の個数: 72

約数和(自身を含む): 52080000

約数和(自身を除く): 31471300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 59, 70, 100, 118, 140, 175, 236, 295, 350, 413, 499, 590, 700, 826, 998, 1180, 1475, 1652, 1996, 2065, 2495, 2950, 3493, 4130, 4990, 5900, 6986, 8260, 9980, 10325, 12475, 13972, 17465, 20650, 24950, 29441, 34930, 41300, 49900, 58882, 69860, 87325, 117764, 147205, 174650, 206087, 294410, 349300, 412174, 588820, 736025, 824348, 1030435, 1472050, 2060870, 2944100, 4121740, 5152175, 10304350, 20608700]

約数ペア:

[(1, 20608700), (2, 10304350), (4, 5152175), (5, 4121740), (7, 2944100), (10, 2060870), (14, 1472050), (20, 1030435), (25, 824348), (28, 736025), (35, 588820), (50, 412174), (59, 349300), (70, 294410), (100, 206087), (118, 174650), (140, 147205), (175, 117764), (236, 87325), (295, 69860), (350, 58882), (413, 49900), (499, 41300), (590, 34930), (700, 29441), (826, 24950), (998, 20650), (1180, 17465), (1475, 13972), (1652, 12475), (1996, 10325), (2065, 9980), (2495, 8260), (2950, 6986), (3493, 5900), (4130, 4990)]