21398520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 256

約数和(自身を含む): 79833600

約数和(自身を除く): 58435080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 29, 30, 33, 39, 40, 43, 44, 52, 55, 58, 60, 65, 66, 78, 86, 87, 88, 104, 110, 116, 120, 129, 130, 132, 143, 145, 156, 165, 172, 174, 195, 215, 220, 232, 258, 260, 264, 286, 290, 312, 319, 330, 344, 348, 377, 390, 429, 430, 435, 440, 473, 516, 520, 559, 572, 580, 638, 645, 660, 696, 715, 754, 780, 858, 860, 870, 946, 957, 1032, 1118, 1131, 1144, 1160, 1247, 1276, 1290, 1320, 1419, 1430, 1508, 1560, 1595, 1677, 1716, 1720, 1740, 1885, 1892, 1914, 2145, 2236, 2262, 2365, 2494, 2552, 2580, 2795, 2838, 2860, 3016, 3190, 3354, 3432, 3480, 3741, 3770, 3784, 3828, 4147, 4290, 4472, 4524, 4730, 4785, 4988, 5160, 5590, 5655, 5676, 5720, 6149, 6235, 6380, 6708, 7095, 7482, 7540, 7656, 8294, 8385, 8580, 9048, 9460, 9570, 9976, 11180, 11310, 11352, 12298, 12441, 12470, 12760, 13416, 13717, 14190, 14964, 15080, 16211, 16588, 16770, 17160, 18447, 18705, 18920, 19140, 20735, 22360, 22620, 24596, 24882, 24940, 27434, 28380, 29928, 30745, 32422, 33176, 33540, 36894, 37410, 38280, 41151, 41470, 45240, 48633, 49192, 49764, 49880, 54868, 56760, 61490, 62205, 64844, 67080, 68585, 73788, 74820, 81055, 82302, 82940, 92235, 97266, 99528, 109736, 122980, 124410, 129688, 137170, 147576, 149640, 162110, 164604, 165880, 178321, 184470, 194532, 205755, 243165, 245960, 248820, 274340, 324220, 329208, 356642, 368940, 389064, 411510, 486330, 497640, 534963, 548680, 648440, 713284, 737880, 823020, 891605, 972660, 1069926, 1426568, 1646040, 1783210, 1945320, 2139852, 2674815, 3566420, 4279704, 5349630, 7132840, 10699260, 21398520]

約数ペア:

[(1, 21398520), (2, 10699260), (3, 7132840), (4, 5349630), (5, 4279704), (6, 3566420), (8, 2674815), (10, 2139852), (11, 1945320), (12, 1783210), (13, 1646040), (15, 1426568), (20, 1069926), (22, 972660), (24, 891605), (26, 823020), (29, 737880), (30, 713284), (33, 648440), (39, 548680), (40, 534963), (43, 497640), (44, 486330), (52, 411510), (55, 389064), (58, 368940), (60, 356642), (65, 329208), (66, 324220), (78, 274340), (86, 248820), (87, 245960), (88, 243165), (104, 205755), (110, 194532), (116, 184470), (120, 178321), (129, 165880), (130, 164604), (132, 162110), (143, 149640), (145, 147576), (156, 137170), (165, 129688), (172, 124410), (174, 122980), (195, 109736), (215, 99528), (220, 97266), (232, 92235), (258, 82940), (260, 82302), (264, 81055), (286, 74820), (290, 73788), (312, 68585), (319, 67080), (330, 64844), (344, 62205), (348, 61490), (377, 56760), (390, 54868), (429, 49880), (430, 49764), (435, 49192), (440, 48633), (473, 45240), (516, 41470), (520, 41151), (559, 38280), (572, 37410), (580, 36894), (638, 33540), (645, 33176), (660, 32422), (696, 30745), (715, 29928), (754, 28380), (780, 27434), (858, 24940), (860, 24882), (870, 24596), (946, 22620), (957, 22360), (1032, 20735), (1118, 19140), (1131, 18920), (1144, 18705), (1160, 18447), (1247, 17160), (1276, 16770), (1290, 16588), (1320, 16211), (1419, 15080), (1430, 14964), (1508, 14190), (1560, 13717), (1595, 13416), (1677, 12760), (1716, 12470), (1720, 12441), (1740, 12298), (1885, 11352), (1892, 11310), (1914, 11180), (2145, 9976), (2236, 9570), (2262, 9460), (2365, 9048), (2494, 8580), (2552, 8385), (2580, 8294), (2795, 7656), (2838, 7540), (2860, 7482), (3016, 7095), (3190, 6708), (3354, 6380), (3432, 6235), (3480, 6149), (3741, 5720), (3770, 5676), (3784, 5655), (3828, 5590), (4147, 5160), (4290, 4988), (4472, 4785), (4524, 4730)]