21520296

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:396

約数の個数: 128

約数和(自身を含む): 70118400

約数和(自身を除く): 48598104

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 43, 54, 56, 63, 72, 84, 86, 108, 126, 129, 168, 172, 189, 216, 252, 258, 301, 331, 344, 378, 387, 504, 516, 602, 662, 756, 774, 903, 993, 1032, 1161, 1204, 1324, 1512, 1548, 1806, 1986, 2317, 2322, 2408, 2648, 2709, 2979, 3096, 3612, 3972, 4634, 4644, 5418, 5958, 6951, 7224, 7944, 8127, 8937, 9268, 9288, 10836, 11916, 13902, 14233, 16254, 17874, 18536, 20853, 21672, 23832, 27804, 28466, 32508, 35748, 41706, 42699, 55608, 56932, 62559, 65016, 71496, 83412, 85398, 99631, 113864, 125118, 128097, 166824, 170796, 199262, 250236, 256194, 298893, 341592, 384291, 398524, 500472, 512388, 597786, 768582, 797048, 896679, 1024776, 1195572, 1537164, 1793358, 2391144, 2690037, 3074328, 3586716, 5380074, 7173432, 10760148, 21520296]

約数ペア:

[(1, 21520296), (2, 10760148), (3, 7173432), (4, 5380074), (6, 3586716), (7, 3074328), (8, 2690037), (9, 2391144), (12, 1793358), (14, 1537164), (18, 1195572), (21, 1024776), (24, 896679), (27, 797048), (28, 768582), (36, 597786), (42, 512388), (43, 500472), (54, 398524), (56, 384291), (63, 341592), (72, 298893), (84, 256194), (86, 250236), (108, 199262), (126, 170796), (129, 166824), (168, 128097), (172, 125118), (189, 113864), (216, 99631), (252, 85398), (258, 83412), (301, 71496), (331, 65016), (344, 62559), (378, 56932), (387, 55608), (504, 42699), (516, 41706), (602, 35748), (662, 32508), (756, 28466), (774, 27804), (903, 23832), (993, 21672), (1032, 20853), (1161, 18536), (1204, 17874), (1324, 16254), (1512, 14233), (1548, 13902), (1806, 11916), (1986, 10836), (2317, 9288), (2322, 9268), (2408, 8937), (2648, 8127), (2709, 7944), (2979, 7224), (3096, 6951), (3612, 5958), (3972, 5418), (4634, 4644)]