18907408

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90901}}^1$

素因数の和:90922

約数の個数: 20

約数和(自身を含む): 39451468

約数和(自身を除く): 20544060

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90901, 181802, 363604, 727208, 1181713, 1454416, 2363426, 4726852, 9453704, 18907408]

約数ペア:

[(1, 18907408), (2, 9453704), (4, 4726852), (8, 2363426), (13, 1454416), (16, 1181713), (26, 727208), (52, 363604), (104, 181802), (208, 90901)]