21498428

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9719}}^1$

素因数の和:9809

約数の個数: 24

約数和(自身を含む): 43545600

約数和(自身を除く): 22047172

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9719, 19438, 38876, 68033, 136066, 272132, 767801, 1535602, 3071204, 5374607, 10749214, 21498428]

約数ペア:

[(1, 21498428), (2, 10749214), (4, 5374607), (7, 3071204), (14, 1535602), (28, 767801), (79, 272132), (158, 136066), (316, 68033), (553, 38876), (1106, 19438), (2212, 9719)]