18927376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90997}}^1$

素因数の和:91018

約数の個数: 20

約数和(自身を含む): 39493132

約数和(自身を除く): 20565756

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90997, 181994, 363988, 727976, 1182961, 1455952, 2365922, 4731844, 9463688, 18927376]

約数ペア:

[(1, 18927376), (2, 9463688), (4, 4731844), (8, 2365922), (13, 1455952), (16, 1182961), (26, 727976), (52, 363988), (104, 181994), (208, 90997)]