18686512

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89839}}^1$

素因数の和:89860

約数の個数: 20

約数和(自身を含む): 38990560

約数和(自身を除く): 20304048

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89839, 179678, 359356, 718712, 1167907, 1437424, 2335814, 4671628, 9343256, 18686512]

約数ペア:

[(1, 18686512), (2, 9343256), (4, 4671628), (8, 2335814), (13, 1437424), (16, 1167907), (26, 718712), (52, 359356), (104, 179678), (208, 89839)]