20207257

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 24820992

約数和(自身を除く): 4613735

約数列:

[1, 7, 31, 49, 53, 217, 251, 371, 1519, 1643, 1757, 2597, 7781, 11501, 12299, 13303, 54467, 80507, 93121, 381269, 412393, 651847, 2886751, 20207257]

約数ペア:

[(1, 20207257), (7, 2886751), (31, 651847), (49, 412393), (53, 381269), (217, 93121), (251, 80507), (371, 54467), (1519, 13303), (1643, 12299), (1757, 11501), (2597, 7781)]