20018947

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 23411808

約数和(自身を除く): 3392861

約数列:

[1, 13, 23, 41, 71, 299, 529, 533, 923, 943, 1633, 2911, 6877, 12259, 21229, 21689, 37559, 37843, 66953, 281957, 488267, 870389, 1539919, 20018947]

約数ペア:

[(1, 20018947), (13, 1539919), (23, 870389), (41, 488267), (71, 281957), (299, 66953), (529, 37843), (533, 37559), (923, 21689), (943, 21229), (1633, 12259), (2911, 6877)]