20781572912

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{613}}^1\times {\mathrm{51679}}^1$

素因数の和:52341

約数の個数: 40

約数和(自身を含む): 41314439040

約数和(自身を除く): 20532866128

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 613, 656, 1226, 2452, 4904, 9808, 25133, 50266, 51679, 100532, 103358, 201064, 206716, 402128, 413432, 826864, 2118839, 4237678, 8475356, 16950712, 31679227, 33901424, 63358454, 126716908, 253433816, 506867632, 1298848307, 2597696614, 5195393228, 10390786456, 20781572912]

約数ペア:

[(1, 20781572912), (2, 10390786456), (4, 5195393228), (8, 2597696614), (16, 1298848307), (41, 506867632), (82, 253433816), (164, 126716908), (328, 63358454), (613, 33901424), (656, 31679227), (1226, 16950712), (2452, 8475356), (4904, 4237678), (9808, 2118839), (25133, 826864), (50266, 413432), (51679, 402128), (100532, 206716), (103358, 201064)]