20454720

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1$

素因数の和:193

約数の個数: 224

約数和(自身を含む): 76809600

約数和(自身を除く): 56354880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 16, 20, 22, 24, 26, 30, 32, 33, 39, 40, 44, 48, 52, 55, 60, 64, 65, 66, 78, 80, 88, 96, 104, 110, 120, 130, 132, 143, 149, 156, 160, 165, 176, 192, 195, 208, 220, 240, 260, 264, 286, 298, 312, 320, 330, 352, 390, 416, 429, 440, 447, 480, 520, 528, 572, 596, 624, 660, 704, 715, 745, 780, 832, 858, 880, 894, 960, 1040, 1056, 1144, 1192, 1248, 1320, 1430, 1490, 1560, 1639, 1716, 1760, 1788, 1937, 2080, 2112, 2145, 2235, 2288, 2384, 2496, 2640, 2860, 2980, 3120, 3278, 3432, 3520, 3576, 3874, 4160, 4290, 4470, 4576, 4768, 4917, 5280, 5720, 5811, 5960, 6240, 6556, 6864, 7152, 7748, 8195, 8580, 8940, 9152, 9536, 9685, 9834, 10560, 11440, 11622, 11920, 12480, 13112, 13728, 14304, 15496, 16390, 17160, 17880, 19370, 19668, 21307, 22880, 23244, 23840, 24585, 26224, 27456, 28608, 29055, 30992, 32780, 34320, 35760, 38740, 39336, 42614, 45760, 46488, 47680, 49170, 52448, 58110, 61984, 63921, 65560, 68640, 71520, 77480, 78672, 85228, 92976, 98340, 104896, 106535, 116220, 123968, 127842, 131120, 137280, 143040, 154960, 157344, 170456, 185952, 196680, 213070, 232440, 255684, 262240, 309920, 314688, 319605, 340912, 371904, 393360, 426140, 464880, 511368, 524480, 619840, 639210, 681824, 786720, 852280, 929760, 1022736, 1278420, 1363648, 1573440, 1704560, 1859520, 2045472, 2556840, 3409120, 4090944, 5113680, 6818240, 10227360, 20454720]

約数ペア:

[(1, 20454720), (2, 10227360), (3, 6818240), (4, 5113680), (5, 4090944), (6, 3409120), (8, 2556840), (10, 2045472), (11, 1859520), (12, 1704560), (13, 1573440), (15, 1363648), (16, 1278420), (20, 1022736), (22, 929760), (24, 852280), (26, 786720), (30, 681824), (32, 639210), (33, 619840), (39, 524480), (40, 511368), (44, 464880), (48, 426140), (52, 393360), (55, 371904), (60, 340912), (64, 319605), (65, 314688), (66, 309920), (78, 262240), (80, 255684), (88, 232440), (96, 213070), (104, 196680), (110, 185952), (120, 170456), (130, 157344), (132, 154960), (143, 143040), (149, 137280), (156, 131120), (160, 127842), (165, 123968), (176, 116220), (192, 106535), (195, 104896), (208, 98340), (220, 92976), (240, 85228), (260, 78672), (264, 77480), (286, 71520), (298, 68640), (312, 65560), (320, 63921), (330, 61984), (352, 58110), (390, 52448), (416, 49170), (429, 47680), (440, 46488), (447, 45760), (480, 42614), (520, 39336), (528, 38740), (572, 35760), (596, 34320), (624, 32780), (660, 30992), (704, 29055), (715, 28608), (745, 27456), (780, 26224), (832, 24585), (858, 23840), (880, 23244), (894, 22880), (960, 21307), (1040, 19668), (1056, 19370), (1144, 17880), (1192, 17160), (1248, 16390), (1320, 15496), (1430, 14304), (1490, 13728), (1560, 13112), (1639, 12480), (1716, 11920), (1760, 11622), (1788, 11440), (1937, 10560), (2080, 9834), (2112, 9685), (2145, 9536), (2235, 9152), (2288, 8940), (2384, 8580), (2496, 8195), (2640, 7748), (2860, 7152), (2980, 6864), (3120, 6556), (3278, 6240), (3432, 5960), (3520, 5811), (3576, 5720), (3874, 5280), (4160, 4917), (4290, 4768), (4470, 4576)]