19873951972

素因数分解:

$2^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1\times {\mathrm{12569}}^1$

素因数の和:13108

約数の個数: 48

約数和(自身を含む): 40123440000

約数和(自身を除く): 20249488028

約数列:

[1, 2, 4, 7, 14, 28, 149, 298, 379, 596, 758, 1043, 1516, 2086, 2653, 4172, 5306, 10612, 12569, 25138, 50276, 56471, 87983, 112942, 175966, 225884, 351932, 395297, 790594, 1581188, 1872781, 3745562, 4763651, 7491124, 9527302, 13109467, 19054604, 26218934, 33345557, 52437868, 66691114, 133382228, 709783999, 1419567998, 2839135996, 4968487993, 9936975986, 19873951972]

約数ペア:

[(1, 19873951972), (2, 9936975986), (4, 4968487993), (7, 2839135996), (14, 1419567998), (28, 709783999), (149, 133382228), (298, 66691114), (379, 52437868), (596, 33345557), (758, 26218934), (1043, 19054604), (1516, 13109467), (2086, 9527302), (2653, 7491124), (4172, 4763651), (5306, 3745562), (10612, 1872781), (12569, 1581188), (25138, 790594), (50276, 395297), (56471, 351932), (87983, 225884), (112942, 175966)]