21191144

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{203761}}^1$

素因数の和:203780

約数の個数: 16

約数和(自身を含む): 42790020

約数和(自身を除く): 21598876

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 203761, 407522, 815044, 1630088, 2648893, 5297786, 10595572, 21191144]

約数ペア:

[(1, 21191144), (2, 10595572), (4, 5297786), (8, 2648893), (13, 1630088), (26, 815044), (52, 407522), (104, 203761)]