20199556

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29881}}^1$

素因数の和:29911

約数の個数: 18

約数和(自身を含む): 38278842

約数和(自身を除く): 18079286

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29881, 59762, 119524, 388453, 776906, 1553812, 5049889, 10099778, 20199556]

約数ペア:

[(1, 20199556), (2, 10099778), (4, 5049889), (13, 1553812), (26, 776906), (52, 388453), (169, 119524), (338, 59762), (676, 29881)]