18689420

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{2693}}^1$

素因数の和:3049

約数の個数: 24

約数和(自身を含む): 39375504

約数和(自身を除く): 20686084

約数列:

[1, 2, 4, 5, 10, 20, 347, 694, 1388, 1735, 2693, 3470, 5386, 6940, 10772, 13465, 26930, 53860, 934471, 1868942, 3737884, 4672355, 9344710, 18689420]

約数ペア:

[(1, 18689420), (2, 9344710), (4, 4672355), (5, 3737884), (10, 1868942), (20, 934471), (347, 53860), (694, 26930), (1388, 13465), (1735, 10772), (2693, 6940), (3470, 5386)]