20168704816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{563}}^1\times {\mathrm{1097}}^1$

素因数の和:1838

約数の個数: 80

約数和(自身を含む): 42464719584

約数和(自身を除く): 22296014768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 157, 208, 314, 563, 628, 1097, 1126, 1256, 2041, 2194, 2252, 2512, 4082, 4388, 4504, 7319, 8164, 8776, 9008, 14261, 14638, 16328, 17552, 28522, 29276, 32656, 57044, 58552, 88391, 114088, 117104, 172229, 176782, 228176, 344458, 353564, 617611, 688916, 707128, 1149083, 1235222, 1377832, 1414256, 2238977, 2298166, 2470444, 2755664, 4477954, 4596332, 4940888, 8028943, 8955908, 9192664, 9881776, 16057886, 17911816, 18385328, 32115772, 35823632, 64231544, 96964927, 128463088, 193929854, 387859708, 775719416, 1260544051, 1551438832, 2521088102, 5042176204, 10084352408, 20168704816]

約数ペア:

[(1, 20168704816), (2, 10084352408), (4, 5042176204), (8, 2521088102), (13, 1551438832), (16, 1260544051), (26, 775719416), (52, 387859708), (104, 193929854), (157, 128463088), (208, 96964927), (314, 64231544), (563, 35823632), (628, 32115772), (1097, 18385328), (1126, 17911816), (1256, 16057886), (2041, 9881776), (2194, 9192664), (2252, 8955908), (2512, 8028943), (4082, 4940888), (4388, 4596332), (4504, 4477954), (7319, 2755664), (8164, 2470444), (8776, 2298166), (9008, 2238977), (14261, 1414256), (14638, 1377832), (16328, 1235222), (17552, 1149083), (28522, 707128), (29276, 688916), (32656, 617611), (57044, 353564), (58552, 344458), (88391, 228176), (114088, 176782), (117104, 172229)]