640343826

素因数分解:

$2^1\times 3^3\times {\mathrm{109}}^1\times {\mathrm{108791}}^1$

素因数の和:108911

約数の個数: 32

約数和(自身を含む): 1436054400

約数和(自身を除く): 795710574

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 109, 218, 327, 654, 981, 1962, 2943, 5886, 108791, 217582, 326373, 652746, 979119, 1958238, 2937357, 5874714, 11858219, 23716438, 35574657, 71149314, 106723971, 213447942, 320171913, 640343826]

約数ペア:

[(1, 640343826), (2, 320171913), (3, 213447942), (6, 106723971), (9, 71149314), (18, 35574657), (27, 23716438), (54, 11858219), (109, 5874714), (218, 2937357), (327, 1958238), (654, 979119), (981, 652746), (1962, 326373), (2943, 217582), (5886, 108791)]