21229320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:347

約数の個数: 128

約数和(自身を含む): 73728000

約数和(自身を除く): 52498680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 127, 140, 168, 199, 210, 254, 280, 381, 398, 420, 508, 597, 635, 762, 796, 840, 889, 995, 1016, 1194, 1270, 1393, 1524, 1592, 1778, 1905, 1990, 2388, 2540, 2667, 2786, 2985, 3048, 3556, 3810, 3980, 4179, 4445, 4776, 5080, 5334, 5572, 5970, 6965, 7112, 7620, 7960, 8358, 8890, 10668, 11144, 11940, 13335, 13930, 15240, 16716, 17780, 20895, 21336, 23880, 25273, 26670, 27860, 33432, 35560, 41790, 50546, 53340, 55720, 75819, 83580, 101092, 106680, 126365, 151638, 167160, 176911, 202184, 252730, 303276, 353822, 379095, 505460, 530733, 606552, 707644, 758190, 884555, 1010920, 1061466, 1415288, 1516380, 1769110, 2122932, 2653665, 3032760, 3538220, 4245864, 5307330, 7076440, 10614660, 21229320]

約数ペア:

[(1, 21229320), (2, 10614660), (3, 7076440), (4, 5307330), (5, 4245864), (6, 3538220), (7, 3032760), (8, 2653665), (10, 2122932), (12, 1769110), (14, 1516380), (15, 1415288), (20, 1061466), (21, 1010920), (24, 884555), (28, 758190), (30, 707644), (35, 606552), (40, 530733), (42, 505460), (56, 379095), (60, 353822), (70, 303276), (84, 252730), (105, 202184), (120, 176911), (127, 167160), (140, 151638), (168, 126365), (199, 106680), (210, 101092), (254, 83580), (280, 75819), (381, 55720), (398, 53340), (420, 50546), (508, 41790), (597, 35560), (635, 33432), (762, 27860), (796, 26670), (840, 25273), (889, 23880), (995, 21336), (1016, 20895), (1194, 17780), (1270, 16716), (1393, 15240), (1524, 13930), (1592, 13335), (1778, 11940), (1905, 11144), (1990, 10668), (2388, 8890), (2540, 8358), (2667, 7960), (2786, 7620), (2985, 7112), (3048, 6965), (3556, 5970), (3810, 5572), (3980, 5334), (4179, 5080), (4445, 4776)]