20543336

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 44193600

約数和(自身を除く): 23650264

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 61, 86, 88, 89, 122, 172, 178, 244, 344, 356, 473, 488, 671, 712, 946, 979, 1342, 1892, 1958, 2623, 2684, 3784, 3827, 3916, 5246, 5368, 5429, 7654, 7832, 10492, 10858, 15308, 20984, 21716, 28853, 30616, 42097, 43432, 57706, 59719, 84194, 115412, 119438, 168388, 230824, 233447, 238876, 336776, 466894, 477752, 933788, 1867576, 2567917, 5135834, 10271668, 20543336]

約数ペア:

[(1, 20543336), (2, 10271668), (4, 5135834), (8, 2567917), (11, 1867576), (22, 933788), (43, 477752), (44, 466894), (61, 336776), (86, 238876), (88, 233447), (89, 230824), (122, 168388), (172, 119438), (178, 115412), (244, 84194), (344, 59719), (356, 57706), (473, 43432), (488, 42097), (671, 30616), (712, 28853), (946, 21716), (979, 20984), (1342, 15308), (1892, 10858), (1958, 10492), (2623, 7832), (2684, 7654), (3784, 5429), (3827, 5368), (3916, 5246)]