20666400

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 144

約数和(自身を含む): 68745600

約数和(自身を除く): 48079200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 79, 80, 96, 100, 109, 120, 150, 158, 160, 200, 218, 237, 240, 300, 316, 327, 395, 400, 436, 474, 480, 545, 600, 632, 654, 790, 800, 872, 948, 1090, 1185, 1200, 1264, 1308, 1580, 1635, 1744, 1896, 1975, 2180, 2370, 2400, 2528, 2616, 2725, 3160, 3270, 3488, 3792, 3950, 4360, 4740, 5232, 5450, 5925, 6320, 6540, 7584, 7900, 8175, 8611, 8720, 9480, 10464, 10900, 11850, 12640, 13080, 15800, 16350, 17222, 17440, 18960, 21800, 23700, 25833, 26160, 31600, 32700, 34444, 37920, 43055, 43600, 47400, 51666, 52320, 63200, 65400, 68888, 86110, 87200, 94800, 103332, 129165, 130800, 137776, 172220, 189600, 206664, 215275, 258330, 261600, 275552, 344440, 413328, 430550, 516660, 645825, 688880, 826656, 861100, 1033320, 1291650, 1377760, 1722200, 2066640, 2583300, 3444400, 4133280, 5166600, 6888800, 10333200, 20666400]

約数ペア:

[(1, 20666400), (2, 10333200), (3, 6888800), (4, 5166600), (5, 4133280), (6, 3444400), (8, 2583300), (10, 2066640), (12, 1722200), (15, 1377760), (16, 1291650), (20, 1033320), (24, 861100), (25, 826656), (30, 688880), (32, 645825), (40, 516660), (48, 430550), (50, 413328), (60, 344440), (75, 275552), (79, 261600), (80, 258330), (96, 215275), (100, 206664), (109, 189600), (120, 172220), (150, 137776), (158, 130800), (160, 129165), (200, 103332), (218, 94800), (237, 87200), (240, 86110), (300, 68888), (316, 65400), (327, 63200), (395, 52320), (400, 51666), (436, 47400), (474, 43600), (480, 43055), (545, 37920), (600, 34444), (632, 32700), (654, 31600), (790, 26160), (800, 25833), (872, 23700), (948, 21800), (1090, 18960), (1185, 17440), (1200, 17222), (1264, 16350), (1308, 15800), (1580, 13080), (1635, 12640), (1744, 11850), (1896, 10900), (1975, 10464), (2180, 9480), (2370, 8720), (2400, 8611), (2528, 8175), (2616, 7900), (2725, 7584), (3160, 6540), (3270, 6320), (3488, 5925), (3792, 5450), (3950, 5232), (4360, 4740)]