18177328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{311}}^1$

素因数の和:613

約数の個数: 40

約数和(自身を含む): 38185056

約数和(自身を除く): 20007728

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 281, 311, 562, 622, 1124, 1244, 2248, 2488, 3653, 4043, 4496, 4976, 7306, 8086, 14612, 16172, 29224, 32344, 58448, 64688, 87391, 174782, 349564, 699128, 1136083, 1398256, 2272166, 4544332, 9088664, 18177328]

約数ペア:

[(1, 18177328), (2, 9088664), (4, 4544332), (8, 2272166), (13, 1398256), (16, 1136083), (26, 699128), (52, 349564), (104, 174782), (208, 87391), (281, 64688), (311, 58448), (562, 32344), (622, 29224), (1124, 16172), (1244, 14612), (2248, 8086), (2488, 7306), (3653, 4976), (4043, 4496)]