21712800

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 144

約数和(自身を含む): 72182880

約数和(自身を除く): 50470080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 80, 83, 96, 100, 109, 120, 150, 160, 166, 200, 218, 240, 249, 300, 327, 332, 400, 415, 436, 480, 498, 545, 600, 654, 664, 800, 830, 872, 996, 1090, 1200, 1245, 1308, 1328, 1635, 1660, 1744, 1992, 2075, 2180, 2400, 2490, 2616, 2656, 2725, 3270, 3320, 3488, 3984, 4150, 4360, 4980, 5232, 5450, 6225, 6540, 6640, 7968, 8175, 8300, 8720, 9047, 9960, 10464, 10900, 12450, 13080, 13280, 16350, 16600, 17440, 18094, 19920, 21800, 24900, 26160, 27141, 32700, 33200, 36188, 39840, 43600, 45235, 49800, 52320, 54282, 65400, 66400, 72376, 87200, 90470, 99600, 108564, 130800, 135705, 144752, 180940, 199200, 217128, 226175, 261600, 271410, 289504, 361880, 434256, 452350, 542820, 678525, 723760, 868512, 904700, 1085640, 1357050, 1447520, 1809400, 2171280, 2714100, 3618800, 4342560, 5428200, 7237600, 10856400, 21712800]

約数ペア:

[(1, 21712800), (2, 10856400), (3, 7237600), (4, 5428200), (5, 4342560), (6, 3618800), (8, 2714100), (10, 2171280), (12, 1809400), (15, 1447520), (16, 1357050), (20, 1085640), (24, 904700), (25, 868512), (30, 723760), (32, 678525), (40, 542820), (48, 452350), (50, 434256), (60, 361880), (75, 289504), (80, 271410), (83, 261600), (96, 226175), (100, 217128), (109, 199200), (120, 180940), (150, 144752), (160, 135705), (166, 130800), (200, 108564), (218, 99600), (240, 90470), (249, 87200), (300, 72376), (327, 66400), (332, 65400), (400, 54282), (415, 52320), (436, 49800), (480, 45235), (498, 43600), (545, 39840), (600, 36188), (654, 33200), (664, 32700), (800, 27141), (830, 26160), (872, 24900), (996, 21800), (1090, 19920), (1200, 18094), (1245, 17440), (1308, 16600), (1328, 16350), (1635, 13280), (1660, 13080), (1744, 12450), (1992, 10900), (2075, 10464), (2180, 9960), (2400, 9047), (2490, 8720), (2616, 8300), (2656, 8175), (2725, 7968), (3270, 6640), (3320, 6540), (3488, 6225), (3984, 5450), (4150, 5232), (4360, 4980)]