18672784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{839}}^1$

素因数の和:967

約数の個数: 40

約数和(自身を含む): 39372480

約数和(自身を除く): 20699696

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 107, 208, 214, 428, 839, 856, 1391, 1678, 1712, 2782, 3356, 5564, 6712, 10907, 11128, 13424, 21814, 22256, 43628, 87256, 89773, 174512, 179546, 359092, 718184, 1167049, 1436368, 2334098, 4668196, 9336392, 18672784]

約数ペア:

[(1, 18672784), (2, 9336392), (4, 4668196), (8, 2334098), (13, 1436368), (16, 1167049), (26, 718184), (52, 359092), (104, 179546), (107, 174512), (208, 89773), (214, 87256), (428, 43628), (839, 22256), (856, 21814), (1391, 13424), (1678, 11128), (1712, 10907), (2782, 6712), (3356, 5564)]