21391776

素因数分解:

$2^5\times 3^6\times 7^1\times {\mathrm{131}}^1$

素因数の和:166

約数の個数: 168

約数和(自身を含む): 72715104

約数和(自身を除く): 51323328

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 54, 56, 63, 72, 81, 84, 96, 108, 112, 126, 131, 144, 162, 168, 189, 216, 224, 243, 252, 262, 288, 324, 336, 378, 393, 432, 486, 504, 524, 567, 648, 672, 729, 756, 786, 864, 917, 972, 1008, 1048, 1134, 1179, 1296, 1458, 1512, 1572, 1701, 1834, 1944, 2016, 2096, 2268, 2358, 2592, 2751, 2916, 3024, 3144, 3402, 3537, 3668, 3888, 4192, 4536, 4716, 5103, 5502, 5832, 6048, 6288, 6804, 7074, 7336, 7776, 8253, 9072, 9432, 10206, 10611, 11004, 11664, 12576, 13608, 14148, 14672, 16506, 18144, 18864, 20412, 21222, 22008, 23328, 24759, 27216, 28296, 29344, 31833, 33012, 37728, 40824, 42444, 44016, 49518, 54432, 56592, 63666, 66024, 74277, 81648, 84888, 88032, 95499, 99036, 113184, 127332, 132048, 148554, 163296, 169776, 190998, 198072, 222831, 254664, 264096, 297108, 339552, 381996, 396144, 445662, 509328, 594216, 668493, 763992, 792288, 891324, 1018656, 1188432, 1336986, 1527984, 1782648, 2376864, 2673972, 3055968, 3565296, 5347944, 7130592, 10695888, 21391776]

約数ペア:

[(1, 21391776), (2, 10695888), (3, 7130592), (4, 5347944), (6, 3565296), (7, 3055968), (8, 2673972), (9, 2376864), (12, 1782648), (14, 1527984), (16, 1336986), (18, 1188432), (21, 1018656), (24, 891324), (27, 792288), (28, 763992), (32, 668493), (36, 594216), (42, 509328), (48, 445662), (54, 396144), (56, 381996), (63, 339552), (72, 297108), (81, 264096), (84, 254664), (96, 222831), (108, 198072), (112, 190998), (126, 169776), (131, 163296), (144, 148554), (162, 132048), (168, 127332), (189, 113184), (216, 99036), (224, 95499), (243, 88032), (252, 84888), (262, 81648), (288, 74277), (324, 66024), (336, 63666), (378, 56592), (393, 54432), (432, 49518), (486, 44016), (504, 42444), (524, 40824), (567, 37728), (648, 33012), (672, 31833), (729, 29344), (756, 28296), (786, 27216), (864, 24759), (917, 23328), (972, 22008), (1008, 21222), (1048, 20412), (1134, 18864), (1179, 18144), (1296, 16506), (1458, 14672), (1512, 14148), (1572, 13608), (1701, 12576), (1834, 11664), (1944, 11004), (2016, 10611), (2096, 10206), (2268, 9432), (2358, 9072), (2592, 8253), (2751, 7776), (2916, 7336), (3024, 7074), (3144, 6804), (3402, 6288), (3537, 6048), (3668, 5832), (3888, 5502), (4192, 5103), (4536, 4716)]