9987020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 22105440

約数和(自身を除く): 12118420

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 67, 116, 134, 145, 257, 268, 290, 335, 514, 580, 670, 1028, 1285, 1340, 1943, 2570, 3886, 5140, 7453, 7772, 9715, 14906, 17219, 19430, 29812, 34438, 37265, 38860, 68876, 74530, 86095, 149060, 172190, 344380, 499351, 998702, 1997404, 2496755, 4993510, 9987020]

約数ペア:

[(1, 9987020), (2, 4993510), (4, 2496755), (5, 1997404), (10, 998702), (20, 499351), (29, 344380), (58, 172190), (67, 149060), (116, 86095), (134, 74530), (145, 68876), (257, 38860), (268, 37265), (290, 34438), (335, 29812), (514, 19430), (580, 17219), (670, 14906), (1028, 9715), (1285, 7772), (1340, 7453), (1943, 5140), (2570, 3886)]