31091760

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:256

約数の個数: 240

約数和(自身を含む): 123801600

約数和(自身を除く): 92709840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 70, 72, 80, 84, 90, 93, 105, 112, 120, 124, 126, 140, 144, 155, 168, 180, 186, 199, 210, 217, 240, 248, 252, 279, 280, 310, 315, 336, 360, 372, 398, 420, 434, 465, 496, 504, 558, 560, 597, 620, 630, 651, 720, 744, 796, 840, 868, 930, 995, 1008, 1085, 1116, 1194, 1240, 1260, 1302, 1393, 1395, 1488, 1592, 1680, 1736, 1791, 1860, 1953, 1990, 2170, 2232, 2388, 2480, 2520, 2604, 2786, 2790, 2985, 3184, 3255, 3472, 3582, 3720, 3906, 3980, 4179, 4340, 4464, 4776, 5040, 5208, 5572, 5580, 5970, 6169, 6510, 6965, 7164, 7440, 7812, 7960, 8358, 8680, 8955, 9552, 9765, 10416, 11144, 11160, 11940, 12338, 12537, 13020, 13930, 14328, 15624, 15920, 16716, 17360, 17910, 18507, 19530, 20895, 22288, 22320, 23880, 24676, 25074, 26040, 27860, 28656, 30845, 31248, 33432, 35820, 37014, 39060, 41790, 43183, 47760, 49352, 50148, 52080, 55521, 55720, 61690, 62685, 66864, 71640, 74028, 78120, 83580, 86366, 92535, 98704, 100296, 111042, 111440, 123380, 125370, 129549, 143280, 148056, 156240, 167160, 172732, 185070, 200592, 215915, 222084, 246760, 250740, 259098, 277605, 296112, 334320, 345464, 370140, 388647, 431830, 444168, 493520, 501480, 518196, 555210, 647745, 690928, 740280, 777294, 863660, 888336, 1002960, 1036392, 1110420, 1295490, 1480560, 1554588, 1727320, 1943235, 2072784, 2220840, 2590980, 3109176, 3454640, 3886470, 4441680, 5181960, 6218352, 7772940, 10363920, 15545880, 31091760]

約数ペア:

[(1, 31091760), (2, 15545880), (3, 10363920), (4, 7772940), (5, 6218352), (6, 5181960), (7, 4441680), (8, 3886470), (9, 3454640), (10, 3109176), (12, 2590980), (14, 2220840), (15, 2072784), (16, 1943235), (18, 1727320), (20, 1554588), (21, 1480560), (24, 1295490), (28, 1110420), (30, 1036392), (31, 1002960), (35, 888336), (36, 863660), (40, 777294), (42, 740280), (45, 690928), (48, 647745), (56, 555210), (60, 518196), (62, 501480), (63, 493520), (70, 444168), (72, 431830), (80, 388647), (84, 370140), (90, 345464), (93, 334320), (105, 296112), (112, 277605), (120, 259098), (124, 250740), (126, 246760), (140, 222084), (144, 215915), (155, 200592), (168, 185070), (180, 172732), (186, 167160), (199, 156240), (210, 148056), (217, 143280), (240, 129549), (248, 125370), (252, 123380), (279, 111440), (280, 111042), (310, 100296), (315, 98704), (336, 92535), (360, 86366), (372, 83580), (398, 78120), (420, 74028), (434, 71640), (465, 66864), (496, 62685), (504, 61690), (558, 55720), (560, 55521), (597, 52080), (620, 50148), (630, 49352), (651, 47760), (720, 43183), (744, 41790), (796, 39060), (840, 37014), (868, 35820), (930, 33432), (995, 31248), (1008, 30845), (1085, 28656), (1116, 27860), (1194, 26040), (1240, 25074), (1260, 24676), (1302, 23880), (1393, 22320), (1395, 22288), (1488, 20895), (1592, 19530), (1680, 18507), (1736, 17910), (1791, 17360), (1860, 16716), (1953, 15920), (1990, 15624), (2170, 14328), (2232, 13930), (2388, 13020), (2480, 12537), (2520, 12338), (2604, 11940), (2786, 11160), (2790, 11144), (2985, 10416), (3184, 9765), (3255, 9552), (3472, 8955), (3582, 8680), (3720, 8358), (3906, 7960), (3980, 7812), (4179, 7440), (4340, 7164), (4464, 6965), (4776, 6510), (5040, 6169), (5208, 5970), (5572, 5580)]