18928676

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{28001}}^1$

素因数の和:28031

約数の個数: 18

約数和(自身を含む): 35870562

約数和(自身を除く): 16941886

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 28001, 56002, 112004, 364013, 728026, 1456052, 4732169, 9464338, 18928676]

約数ペア:

[(1, 18928676), (2, 9464338), (4, 4732169), (13, 1456052), (26, 728026), (52, 364013), (169, 112004), (338, 56002), (676, 28001)]