21789018

素因数分解:

$2^1\times 3^2\times {\mathrm{307}}^1\times {\mathrm{3943}}^1$

素因数の和:4258

約数の個数: 24

約数和(自身を含む): 47375328

約数和(自身を除く): 25586310

約数列:

[1, 2, 3, 6, 9, 18, 307, 614, 921, 1842, 2763, 3943, 5526, 7886, 11829, 23658, 35487, 70974, 1210501, 2421002, 3631503, 7263006, 10894509, 21789018]

約数ペア:

[(1, 21789018), (2, 10894509), (3, 7263006), (6, 3631503), (9, 2421002), (18, 1210501), (307, 70974), (614, 35487), (921, 23658), (1842, 11829), (2763, 7886), (3943, 5526)]