20553904

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 48568320

約数和(自身を除く): 28014416

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 79, 92, 101, 112, 158, 161, 184, 202, 316, 322, 368, 404, 553, 632, 644, 707, 808, 1106, 1264, 1288, 1414, 1616, 1817, 2212, 2323, 2576, 2828, 3634, 4424, 4646, 5656, 7268, 7979, 8848, 9292, 11312, 12719, 14536, 15958, 16261, 18584, 25438, 29072, 31916, 32522, 37168, 50876, 55853, 63832, 65044, 101752, 111706, 127664, 130088, 183517, 203504, 223412, 260176, 367034, 446824, 734068, 893648, 1284619, 1468136, 2569238, 2936272, 5138476, 10276952, 20553904]

約数ペア:

[(1, 20553904), (2, 10276952), (4, 5138476), (7, 2936272), (8, 2569238), (14, 1468136), (16, 1284619), (23, 893648), (28, 734068), (46, 446824), (56, 367034), (79, 260176), (92, 223412), (101, 203504), (112, 183517), (158, 130088), (161, 127664), (184, 111706), (202, 101752), (316, 65044), (322, 63832), (368, 55853), (404, 50876), (553, 37168), (632, 32522), (644, 31916), (707, 29072), (808, 25438), (1106, 18584), (1264, 16261), (1288, 15958), (1414, 14536), (1616, 12719), (1817, 11312), (2212, 9292), (2323, 8848), (2576, 7979), (2828, 7268), (3634, 5656), (4424, 4646)]