81860218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{86533}}^1$

素因数の和:86589

約数の個数: 16

約数和(自身を含む): 137069856

約数和(自身を除く): 55209638

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 86533, 173066, 951863, 1903726, 3720919, 7441838, 40930109, 81860218]

約数ペア:

[(1, 81860218), (2, 40930109), (11, 7441838), (22, 3720919), (43, 1903726), (86, 951863), (473, 173066), (946, 86533)]