21163040

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4561}}^1$

素因数の和:4605

約数の個数: 48

約数和(自身を含む): 51733080

約数和(自身を除く): 30570040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4561, 4640, 9122, 18244, 22805, 36488, 45610, 72976, 91220, 132269, 145952, 182440, 264538, 364880, 529076, 661345, 729760, 1058152, 1322690, 2116304, 2645380, 4232608, 5290760, 10581520, 21163040]

約数ペア:

[(1, 21163040), (2, 10581520), (4, 5290760), (5, 4232608), (8, 2645380), (10, 2116304), (16, 1322690), (20, 1058152), (29, 729760), (32, 661345), (40, 529076), (58, 364880), (80, 264538), (116, 182440), (145, 145952), (160, 132269), (232, 91220), (290, 72976), (464, 45610), (580, 36488), (928, 22805), (1160, 18244), (2320, 9122), (4561, 4640)]