21637616

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1$

素因数の和:239

約数の個数: 120

約数和(自身を含む): 57590064

約数和(自身を除く): 35952448

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 49, 52, 56, 77, 88, 91, 98, 104, 112, 143, 154, 176, 182, 193, 196, 208, 286, 308, 364, 386, 392, 539, 572, 616, 637, 728, 772, 784, 1001, 1078, 1144, 1232, 1274, 1351, 1456, 1544, 2002, 2123, 2156, 2288, 2509, 2548, 2702, 3088, 4004, 4246, 4312, 5018, 5096, 5404, 7007, 8008, 8492, 8624, 9457, 10036, 10192, 10808, 14014, 14861, 16016, 16984, 17563, 18914, 20072, 21616, 27599, 28028, 29722, 33968, 35126, 37828, 40144, 55198, 56056, 59444, 70252, 75656, 104027, 110396, 112112, 118888, 122941, 140504, 151312, 193193, 208054, 220792, 237776, 245882, 281008, 386386, 416108, 441584, 491764, 772772, 832216, 983528, 1352351, 1545544, 1664432, 1967056, 2704702, 3091088, 5409404, 10818808, 21637616]

約数ペア:

[(1, 21637616), (2, 10818808), (4, 5409404), (7, 3091088), (8, 2704702), (11, 1967056), (13, 1664432), (14, 1545544), (16, 1352351), (22, 983528), (26, 832216), (28, 772772), (44, 491764), (49, 441584), (52, 416108), (56, 386386), (77, 281008), (88, 245882), (91, 237776), (98, 220792), (104, 208054), (112, 193193), (143, 151312), (154, 140504), (176, 122941), (182, 118888), (193, 112112), (196, 110396), (208, 104027), (286, 75656), (308, 70252), (364, 59444), (386, 56056), (392, 55198), (539, 40144), (572, 37828), (616, 35126), (637, 33968), (728, 29722), (772, 28028), (784, 27599), (1001, 21616), (1078, 20072), (1144, 18914), (1232, 17563), (1274, 16984), (1351, 16016), (1456, 14861), (1544, 14014), (2002, 10808), (2123, 10192), (2156, 10036), (2288, 9457), (2509, 8624), (2548, 8492), (2702, 8008), (3088, 7007), (4004, 5404), (4246, 5096), (4312, 5018)]