21557328

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{193}}^1$

素因数の和:396

約数の個数: 80

約数和(自身を含む): 60621120

約数和(自身を除く): 39063792

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 179, 193, 208, 312, 358, 386, 537, 579, 624, 716, 772, 1074, 1158, 1432, 1544, 2148, 2316, 2327, 2509, 2864, 3088, 4296, 4632, 4654, 5018, 6981, 7527, 8592, 9264, 9308, 10036, 13962, 15054, 18616, 20072, 27924, 30108, 34547, 37232, 40144, 55848, 60216, 69094, 103641, 111696, 120432, 138188, 207282, 276376, 414564, 449111, 552752, 829128, 898222, 1347333, 1658256, 1796444, 2694666, 3592888, 5389332, 7185776, 10778664, 21557328]

約数ペア:

[(1, 21557328), (2, 10778664), (3, 7185776), (4, 5389332), (6, 3592888), (8, 2694666), (12, 1796444), (13, 1658256), (16, 1347333), (24, 898222), (26, 829128), (39, 552752), (48, 449111), (52, 414564), (78, 276376), (104, 207282), (156, 138188), (179, 120432), (193, 111696), (208, 103641), (312, 69094), (358, 60216), (386, 55848), (537, 40144), (579, 37232), (624, 34547), (716, 30108), (772, 27924), (1074, 20072), (1158, 18616), (1432, 15054), (1544, 13962), (2148, 10036), (2316, 9308), (2327, 9264), (2509, 8592), (2864, 7527), (3088, 6981), (4296, 5018), (4632, 4654)]