18643664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89633}}^1$

素因数の和:89654

約数の個数: 20

約数和(自身を含む): 38901156

約数和(自身を除く): 20257492

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89633, 179266, 358532, 717064, 1165229, 1434128, 2330458, 4660916, 9321832, 18643664]

約数ペア:

[(1, 18643664), (2, 9321832), (4, 4660916), (8, 2330458), (13, 1434128), (16, 1165229), (26, 717064), (52, 358532), (104, 179266), (208, 89633)]