81987534

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{64153}}^1$

素因数の和:64232

約数の個数: 24

約数和(自身を含む): 180144432

約数和(自身を除く): 98156898

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 64153, 128306, 192459, 384918, 577377, 1154754, 4554863, 9109726, 13664589, 27329178, 40993767, 81987534]

約数ペア:

[(1, 81987534), (2, 40993767), (3, 27329178), (6, 13664589), (9, 9109726), (18, 4554863), (71, 1154754), (142, 577377), (213, 384918), (426, 192459), (639, 128306), (1278, 64153)]