20977216

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1327}}^1$

素因数の和:1371

約数の個数: 56

約数和(自身を含む): 47223680

約数和(自身を除く): 26246464

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 152, 208, 247, 304, 416, 494, 608, 832, 988, 1216, 1327, 1976, 2654, 3952, 5308, 7904, 10616, 15808, 17251, 21232, 25213, 34502, 42464, 50426, 69004, 84928, 100852, 138008, 201704, 276016, 327769, 403408, 552032, 655538, 806816, 1104064, 1311076, 1613632, 2622152, 5244304, 10488608, 20977216]

約数ペア:

[(1, 20977216), (2, 10488608), (4, 5244304), (8, 2622152), (13, 1613632), (16, 1311076), (19, 1104064), (26, 806816), (32, 655538), (38, 552032), (52, 403408), (64, 327769), (76, 276016), (104, 201704), (152, 138008), (208, 100852), (247, 84928), (304, 69004), (416, 50426), (494, 42464), (608, 34502), (832, 25213), (988, 21232), (1216, 17251), (1327, 15808), (1976, 10616), (2654, 7904), (3952, 5308)]