21469980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:164

約数の個数: 192

約数和(自身を含む): 75866112

約数和(自身を除く): 54396132

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 31, 34, 35, 42, 51, 60, 62, 68, 70, 84, 85, 93, 97, 102, 105, 119, 124, 140, 155, 170, 186, 194, 204, 210, 217, 238, 255, 291, 310, 340, 357, 372, 388, 420, 434, 465, 476, 485, 510, 527, 582, 595, 620, 651, 679, 714, 868, 930, 970, 1020, 1054, 1085, 1164, 1190, 1302, 1358, 1428, 1455, 1581, 1649, 1785, 1860, 1940, 2037, 2108, 2170, 2380, 2604, 2635, 2716, 2910, 3007, 3162, 3255, 3298, 3395, 3570, 3689, 4074, 4340, 4947, 5270, 5820, 6014, 6324, 6510, 6596, 6790, 7140, 7378, 7905, 8148, 8245, 9021, 9894, 10185, 10540, 11067, 11543, 12028, 13020, 13580, 14756, 15035, 15810, 16490, 18042, 18445, 19788, 20370, 21049, 22134, 23086, 24735, 30070, 31620, 32980, 34629, 36084, 36890, 40740, 42098, 44268, 45105, 46172, 49470, 51119, 55335, 57715, 60140, 63147, 69258, 73780, 84196, 90210, 98940, 102238, 105245, 110670, 115430, 126294, 138516, 153357, 173145, 180420, 204476, 210490, 221340, 230860, 252588, 255595, 306714, 315735, 346290, 357833, 420980, 511190, 613428, 631470, 692580, 715666, 766785, 1022380, 1073499, 1262940, 1431332, 1533570, 1789165, 2146998, 3067140, 3578330, 4293996, 5367495, 7156660, 10734990, 21469980]

約数ペア:

[(1, 21469980), (2, 10734990), (3, 7156660), (4, 5367495), (5, 4293996), (6, 3578330), (7, 3067140), (10, 2146998), (12, 1789165), (14, 1533570), (15, 1431332), (17, 1262940), (20, 1073499), (21, 1022380), (28, 766785), (30, 715666), (31, 692580), (34, 631470), (35, 613428), (42, 511190), (51, 420980), (60, 357833), (62, 346290), (68, 315735), (70, 306714), (84, 255595), (85, 252588), (93, 230860), (97, 221340), (102, 210490), (105, 204476), (119, 180420), (124, 173145), (140, 153357), (155, 138516), (170, 126294), (186, 115430), (194, 110670), (204, 105245), (210, 102238), (217, 98940), (238, 90210), (255, 84196), (291, 73780), (310, 69258), (340, 63147), (357, 60140), (372, 57715), (388, 55335), (420, 51119), (434, 49470), (465, 46172), (476, 45105), (485, 44268), (510, 42098), (527, 40740), (582, 36890), (595, 36084), (620, 34629), (651, 32980), (679, 31620), (714, 30070), (868, 24735), (930, 23086), (970, 22134), (1020, 21049), (1054, 20370), (1085, 19788), (1164, 18445), (1190, 18042), (1302, 16490), (1358, 15810), (1428, 15035), (1455, 14756), (1581, 13580), (1649, 13020), (1785, 12028), (1860, 11543), (1940, 11067), (2037, 10540), (2108, 10185), (2170, 9894), (2380, 9021), (2604, 8245), (2635, 8148), (2716, 7905), (2910, 7378), (3007, 7140), (3162, 6790), (3255, 6596), (3298, 6510), (3395, 6324), (3570, 6014), (3689, 5820), (4074, 5270), (4340, 4947)]