20989156

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{7867}}^1$

素因数の和:7923

約数の個数: 24

約数和(自身を含む): 39654720

約数和(自身を除く): 18665564

約数列:

[1, 2, 4, 23, 29, 46, 58, 92, 116, 667, 1334, 2668, 7867, 15734, 31468, 180941, 228143, 361882, 456286, 723764, 912572, 5247289, 10494578, 20989156]

約数ペア:

[(1, 20989156), (2, 10494578), (4, 5247289), (23, 912572), (29, 723764), (46, 456286), (58, 361882), (92, 228143), (116, 180941), (667, 31468), (1334, 15734), (2668, 7867)]