21507444

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 67267200

約数和(自身を除く): 45759756

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 29, 36, 42, 54, 58, 63, 81, 84, 87, 108, 109, 116, 126, 162, 174, 189, 203, 218, 243, 252, 261, 324, 327, 348, 378, 406, 436, 486, 522, 567, 609, 654, 756, 763, 783, 812, 972, 981, 1044, 1134, 1218, 1308, 1526, 1566, 1701, 1827, 1962, 2268, 2289, 2349, 2436, 2943, 3052, 3132, 3161, 3402, 3654, 3924, 4578, 4698, 5481, 5886, 6322, 6804, 6867, 7047, 7308, 8829, 9156, 9396, 9483, 10962, 11772, 12644, 13734, 14094, 16443, 17658, 18966, 20601, 21924, 22127, 26487, 27468, 28188, 28449, 32886, 35316, 37932, 41202, 44254, 49329, 52974, 56898, 61803, 65772, 66381, 82404, 85347, 88508, 98658, 105948, 113796, 123606, 132762, 170694, 185409, 197316, 199143, 247212, 256041, 265524, 341388, 370818, 398286, 512082, 597429, 741636, 768123, 796572, 1024164, 1194858, 1536246, 1792287, 2389716, 3072492, 3584574, 5376861, 7169148, 10753722, 21507444]

約数ペア:

[(1, 21507444), (2, 10753722), (3, 7169148), (4, 5376861), (6, 3584574), (7, 3072492), (9, 2389716), (12, 1792287), (14, 1536246), (18, 1194858), (21, 1024164), (27, 796572), (28, 768123), (29, 741636), (36, 597429), (42, 512082), (54, 398286), (58, 370818), (63, 341388), (81, 265524), (84, 256041), (87, 247212), (108, 199143), (109, 197316), (116, 185409), (126, 170694), (162, 132762), (174, 123606), (189, 113796), (203, 105948), (218, 98658), (243, 88508), (252, 85347), (261, 82404), (324, 66381), (327, 65772), (348, 61803), (378, 56898), (406, 52974), (436, 49329), (486, 44254), (522, 41202), (567, 37932), (609, 35316), (654, 32886), (756, 28449), (763, 28188), (783, 27468), (812, 26487), (972, 22127), (981, 21924), (1044, 20601), (1134, 18966), (1218, 17658), (1308, 16443), (1526, 14094), (1566, 13734), (1701, 12644), (1827, 11772), (1962, 10962), (2268, 9483), (2289, 9396), (2349, 9156), (2436, 8829), (2943, 7308), (3052, 7047), (3132, 6867), (3161, 6804), (3402, 6322), (3654, 5886), (3924, 5481), (4578, 4698)]