209721960

素因数分解:

$2^3\times 3^4\times 5^1\times 7^2\times {\mathrm{1321}}^1$

素因数の和:1358

約数の個数: 240

約数和(自身を含む): 820605060

約数和(自身を除く): 610883100

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 49, 54, 56, 60, 63, 70, 72, 81, 84, 90, 98, 105, 108, 120, 126, 135, 140, 147, 162, 168, 180, 189, 196, 210, 216, 245, 252, 270, 280, 294, 315, 324, 360, 378, 392, 405, 420, 441, 490, 504, 540, 567, 588, 630, 648, 735, 756, 810, 840, 882, 945, 980, 1080, 1134, 1176, 1260, 1321, 1323, 1470, 1512, 1620, 1764, 1890, 1960, 2205, 2268, 2520, 2642, 2646, 2835, 2940, 3240, 3528, 3780, 3963, 3969, 4410, 4536, 5284, 5292, 5670, 5880, 6605, 6615, 7560, 7926, 7938, 8820, 9247, 10568, 10584, 11340, 11889, 13210, 13230, 15852, 15876, 17640, 18494, 19815, 19845, 22680, 23778, 26420, 26460, 27741, 31704, 31752, 35667, 36988, 39630, 39690, 46235, 47556, 52840, 52920, 55482, 59445, 64729, 71334, 73976, 79260, 79380, 83223, 92470, 95112, 107001, 110964, 118890, 129458, 138705, 142668, 158520, 158760, 166446, 178335, 184940, 194187, 214002, 221928, 237780, 249669, 258916, 277410, 285336, 323645, 332892, 356670, 369880, 388374, 416115, 428004, 475560, 499338, 517832, 535005, 554820, 582561, 647290, 665784, 713340, 749007, 776748, 832230, 856008, 970935, 998676, 1070010, 1109640, 1165122, 1248345, 1294580, 1426680, 1498014, 1553496, 1664460, 1747683, 1941870, 1997352, 2140020, 2330244, 2496690, 2589160, 2912805, 2996028, 3328920, 3495366, 3745035, 3883740, 4280040, 4660488, 4993380, 5243049, 5825610, 5992056, 6990732, 7490070, 7767480, 8738415, 9986760, 10486098, 11651220, 13981464, 14980140, 17476830, 20972196, 23302440, 26215245, 29960280, 34953660, 41944392, 52430490, 69907320, 104860980, 209721960]

約数ペア:

[(1, 209721960), (2, 104860980), (3, 69907320), (4, 52430490), (5, 41944392), (6, 34953660), (7, 29960280), (8, 26215245), (9, 23302440), (10, 20972196), (12, 17476830), (14, 14980140), (15, 13981464), (18, 11651220), (20, 10486098), (21, 9986760), (24, 8738415), (27, 7767480), (28, 7490070), (30, 6990732), (35, 5992056), (36, 5825610), (40, 5243049), (42, 4993380), (45, 4660488), (49, 4280040), (54, 3883740), (56, 3745035), (60, 3495366), (63, 3328920), (70, 2996028), (72, 2912805), (81, 2589160), (84, 2496690), (90, 2330244), (98, 2140020), (105, 1997352), (108, 1941870), (120, 1747683), (126, 1664460), (135, 1553496), (140, 1498014), (147, 1426680), (162, 1294580), (168, 1248345), (180, 1165122), (189, 1109640), (196, 1070010), (210, 998676), (216, 970935), (245, 856008), (252, 832230), (270, 776748), (280, 749007), (294, 713340), (315, 665784), (324, 647290), (360, 582561), (378, 554820), (392, 535005), (405, 517832), (420, 499338), (441, 475560), (490, 428004), (504, 416115), (540, 388374), (567, 369880), (588, 356670), (630, 332892), (648, 323645), (735, 285336), (756, 277410), (810, 258916), (840, 249669), (882, 237780), (945, 221928), (980, 214002), (1080, 194187), (1134, 184940), (1176, 178335), (1260, 166446), (1321, 158760), (1323, 158520), (1470, 142668), (1512, 138705), (1620, 129458), (1764, 118890), (1890, 110964), (1960, 107001), (2205, 95112), (2268, 92470), (2520, 83223), (2642, 79380), (2646, 79260), (2835, 73976), (2940, 71334), (3240, 64729), (3528, 59445), (3780, 55482), (3963, 52920), (3969, 52840), (4410, 47556), (4536, 46235), (5284, 39690), (5292, 39630), (5670, 36988), (5880, 35667), (6605, 31752), (6615, 31704), (7560, 27741), (7926, 26460), (7938, 26420), (8820, 23778), (9247, 22680), (10568, 19845), (10584, 19815), (11340, 18494), (11889, 17640), (13210, 15876), (13230, 15852)]