20954920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1117}}^1$

素因数の和:1202

約数の個数: 64

約数和(自身を含む): 54737280

約数和(自身を除く): 33782360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1117, 1340, 1876, 2234, 2345, 2680, 3752, 4468, 4690, 5585, 7819, 8936, 9380, 11170, 15638, 18760, 22340, 31276, 39095, 44680, 62552, 74839, 78190, 149678, 156380, 299356, 312760, 374195, 523873, 598712, 748390, 1047746, 1496780, 2095492, 2619365, 2993560, 4190984, 5238730, 10477460, 20954920]

約数ペア:

[(1, 20954920), (2, 10477460), (4, 5238730), (5, 4190984), (7, 2993560), (8, 2619365), (10, 2095492), (14, 1496780), (20, 1047746), (28, 748390), (35, 598712), (40, 523873), (56, 374195), (67, 312760), (70, 299356), (134, 156380), (140, 149678), (268, 78190), (280, 74839), (335, 62552), (469, 44680), (536, 39095), (670, 31276), (938, 22340), (1117, 18760), (1340, 15638), (1876, 11170), (2234, 9380), (2345, 8936), (2680, 7819), (3752, 5585), (4468, 4690)]