18894928

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90841}}^1$

素因数の和:90862

約数の個数: 20

約数和(自身を含む): 39425428

約数和(自身を除く): 20530500

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90841, 181682, 363364, 726728, 1180933, 1453456, 2361866, 4723732, 9447464, 18894928]

約数ペア:

[(1, 18894928), (2, 9447464), (4, 4723732), (8, 2361866), (13, 1453456), (16, 1180933), (26, 726728), (52, 363364), (104, 181682), (208, 90841)]