20556800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1$

素因数の和:114

約数の個数: 132

約数和(自身を含む): 56349816

約数和(自身を除く): 35793016

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 73, 80, 88, 100, 110, 128, 146, 160, 176, 200, 220, 256, 275, 292, 320, 352, 365, 400, 440, 512, 550, 584, 640, 704, 730, 800, 803, 880, 1024, 1100, 1168, 1280, 1408, 1460, 1600, 1606, 1760, 1825, 2200, 2336, 2560, 2816, 2920, 3200, 3212, 3520, 3650, 4015, 4400, 4672, 5120, 5632, 5840, 6400, 6424, 7040, 7300, 8030, 8800, 9344, 11264, 11680, 12800, 12848, 14080, 14600, 16060, 17600, 18688, 20075, 23360, 25600, 25696, 28160, 29200, 32120, 35200, 37376, 40150, 46720, 51392, 56320, 58400, 64240, 70400, 74752, 80300, 93440, 102784, 116800, 128480, 140800, 160600, 186880, 205568, 233600, 256960, 281600, 321200, 373760, 411136, 467200, 513920, 642400, 822272, 934400, 1027840, 1284800, 1868800, 2055680, 2569600, 4111360, 5139200, 10278400, 20556800]

約数ペア:

[(1, 20556800), (2, 10278400), (4, 5139200), (5, 4111360), (8, 2569600), (10, 2055680), (11, 1868800), (16, 1284800), (20, 1027840), (22, 934400), (25, 822272), (32, 642400), (40, 513920), (44, 467200), (50, 411136), (55, 373760), (64, 321200), (73, 281600), (80, 256960), (88, 233600), (100, 205568), (110, 186880), (128, 160600), (146, 140800), (160, 128480), (176, 116800), (200, 102784), (220, 93440), (256, 80300), (275, 74752), (292, 70400), (320, 64240), (352, 58400), (365, 56320), (400, 51392), (440, 46720), (512, 40150), (550, 37376), (584, 35200), (640, 32120), (704, 29200), (730, 28160), (800, 25696), (803, 25600), (880, 23360), (1024, 20075), (1100, 18688), (1168, 17600), (1280, 16060), (1408, 14600), (1460, 14080), (1600, 12848), (1606, 12800), (1760, 11680), (1825, 11264), (2200, 9344), (2336, 8800), (2560, 8030), (2816, 7300), (2920, 7040), (3200, 6424), (3212, 6400), (3520, 5840), (3650, 5632), (4015, 5120), (4400, 4672)]