20811294

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{499}}^1$

素因数の和:845

約数の個数: 48

約数和(自身を含む): 51792000

約数和(自身を除く): 30980706

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 331, 499, 662, 993, 998, 1497, 1986, 2317, 2979, 2994, 3493, 4491, 4634, 5958, 6951, 6986, 8982, 10479, 13902, 20853, 20958, 31437, 41706, 62874, 165169, 330338, 495507, 991014, 1156183, 1486521, 2312366, 2973042, 3468549, 6937098, 10405647, 20811294]

約数ペア:

[(1, 20811294), (2, 10405647), (3, 6937098), (6, 3468549), (7, 2973042), (9, 2312366), (14, 1486521), (18, 1156183), (21, 991014), (42, 495507), (63, 330338), (126, 165169), (331, 62874), (499, 41706), (662, 31437), (993, 20958), (998, 20853), (1497, 13902), (1986, 10479), (2317, 8982), (2979, 6986), (2994, 6951), (3493, 5958), (4491, 4634)]