81365284

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2903}}^1$

素因数の和:2945

約数の個数: 72

約数和(自身を含む): 194660928

約数和(自身を除く): 113295644

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 539, 572, 637, 1001, 1078, 1274, 2002, 2156, 2548, 2903, 4004, 5806, 7007, 11612, 14014, 20321, 28028, 31933, 37739, 40642, 63866, 75478, 81284, 127732, 142247, 150956, 223531, 264173, 284494, 415129, 447062, 528346, 568988, 830258, 894124, 1056692, 1564717, 1660516, 1849211, 2905903, 3129434, 3698422, 5811806, 6258868, 7396844, 11623612, 20341321, 40682642, 81365284]

約数ペア:

[(1, 81365284), (2, 40682642), (4, 20341321), (7, 11623612), (11, 7396844), (13, 6258868), (14, 5811806), (22, 3698422), (26, 3129434), (28, 2905903), (44, 1849211), (49, 1660516), (52, 1564717), (77, 1056692), (91, 894124), (98, 830258), (143, 568988), (154, 528346), (182, 447062), (196, 415129), (286, 284494), (308, 264173), (364, 223531), (539, 150956), (572, 142247), (637, 127732), (1001, 81284), (1078, 75478), (1274, 63866), (2002, 40642), (2156, 37739), (2548, 31933), (2903, 28028), (4004, 20321), (5806, 14014), (7007, 11612)]