18704660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71941}}^1$

素因数の和:71963

約数の個数: 24

約数和(自身を含む): 42301896

約数和(自身を除く): 23597236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71941, 143882, 287764, 359705, 719410, 935233, 1438820, 1870466, 3740932, 4676165, 9352330, 18704660]

約数ペア:

[(1, 18704660), (2, 9352330), (4, 4676165), (5, 3740932), (10, 1870466), (13, 1438820), (20, 935233), (26, 719410), (52, 359705), (65, 287764), (130, 143882), (260, 71941)]