20392904

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 26055736

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 71, 92, 142, 161, 184, 223, 284, 322, 446, 497, 568, 644, 892, 994, 1288, 1561, 1633, 1784, 1988, 3122, 3266, 3976, 5129, 6244, 6532, 10258, 11431, 12488, 13064, 15833, 20516, 22862, 31666, 35903, 41032, 45724, 63332, 71806, 91448, 110831, 126664, 143612, 221662, 287224, 364159, 443324, 728318, 886648, 1456636, 2549113, 2913272, 5098226, 10196452, 20392904]

約数ペア:

[(1, 20392904), (2, 10196452), (4, 5098226), (7, 2913272), (8, 2549113), (14, 1456636), (23, 886648), (28, 728318), (46, 443324), (56, 364159), (71, 287224), (92, 221662), (142, 143612), (161, 126664), (184, 110831), (223, 91448), (284, 71806), (322, 63332), (446, 45724), (497, 41032), (568, 35903), (644, 31666), (892, 22862), (994, 20516), (1288, 15833), (1561, 13064), (1633, 12488), (1784, 11431), (1988, 10258), (3122, 6532), (3266, 6244), (3976, 5129)]