20718866

素因数分解:

$2^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{3989}}^1$

素因数の和:4058

約数の個数: 24

約数和(自身を含む): 36843660

約数和(自身を除く): 16124794

約数列:

[1, 2, 7, 14, 49, 53, 98, 106, 371, 742, 2597, 3989, 5194, 7978, 27923, 55846, 195461, 211417, 390922, 422834, 1479919, 2959838, 10359433, 20718866]

約数ペア:

[(1, 20718866), (2, 10359433), (7, 2959838), (14, 1479919), (49, 422834), (53, 390922), (98, 211417), (106, 195461), (371, 55846), (742, 27923), (2597, 7978), (3989, 5194)]