20981898

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{23789}}^1$

素因数の和:23811

約数の個数: 36

約数和(自身を含む): 52885170

約数和(自身を除く): 31903272

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 441, 882, 23789, 47578, 71367, 142734, 166523, 214101, 333046, 428202, 499569, 999138, 1165661, 1498707, 2331322, 2997414, 3496983, 6993966, 10490949, 20981898]

約数ペア:

[(1, 20981898), (2, 10490949), (3, 6993966), (6, 3496983), (7, 2997414), (9, 2331322), (14, 1498707), (18, 1165661), (21, 999138), (42, 499569), (49, 428202), (63, 333046), (98, 214101), (126, 166523), (147, 142734), (294, 71367), (441, 47578), (882, 23789)]