19888623

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2131}}^1$

素因数の和:2215

約数の個数: 24

約数和(自身を含む): 30931056

約数和(自身を除く): 11042433

約数列:

[1, 3, 9, 17, 51, 61, 153, 183, 549, 1037, 2131, 3111, 6393, 9333, 19179, 36227, 108681, 129991, 326043, 389973, 1169919, 2209847, 6629541, 19888623]

約数ペア:

[(1, 19888623), (3, 6629541), (9, 2209847), (17, 1169919), (51, 389973), (61, 326043), (153, 129991), (183, 108681), (549, 36227), (1037, 19179), (2131, 9333), (3111, 6393)]