20402694

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:406

約数の個数: 72

約数和(自身を含む): 50529960

約数和(自身を除く): 30127266

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 169, 171, 234, 247, 338, 342, 353, 494, 507, 706, 741, 1014, 1059, 1482, 1521, 2118, 2223, 3042, 3177, 3211, 4446, 4589, 6354, 6422, 6707, 9178, 9633, 13414, 13767, 19266, 20121, 27534, 28899, 40242, 41301, 57798, 59657, 60363, 82602, 87191, 119314, 120726, 174382, 178971, 261573, 357942, 523146, 536913, 784719, 1073826, 1133483, 1569438, 2266966, 3400449, 6800898, 10201347, 20402694]

約数ペア:

[(1, 20402694), (2, 10201347), (3, 6800898), (6, 3400449), (9, 2266966), (13, 1569438), (18, 1133483), (19, 1073826), (26, 784719), (38, 536913), (39, 523146), (57, 357942), (78, 261573), (114, 178971), (117, 174382), (169, 120726), (171, 119314), (234, 87191), (247, 82602), (338, 60363), (342, 59657), (353, 57798), (494, 41301), (507, 40242), (706, 28899), (741, 27534), (1014, 20121), (1059, 19266), (1482, 13767), (1521, 13414), (2118, 9633), (2223, 9178), (3042, 6707), (3177, 6422), (3211, 6354), (4446, 4589)]