21784084

素因数分解:

$2^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{7703}}^1$

素因数の和:7815

約数の個数: 24

約数和(自身を含む): 44005248

約数和(自身を除く): 22221164

約数列:

[1, 2, 4, 7, 14, 28, 101, 202, 404, 707, 1414, 2828, 7703, 15406, 30812, 53921, 107842, 215684, 778003, 1556006, 3112012, 5446021, 10892042, 21784084]

約数ペア:

[(1, 21784084), (2, 10892042), (4, 5446021), (7, 3112012), (14, 1556006), (28, 778003), (101, 215684), (202, 107842), (404, 53921), (707, 30812), (1414, 15406), (2828, 7703)]