19641747

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 9098349

約数列:

[1, 3, 23, 41, 53, 69, 123, 131, 159, 393, 943, 1219, 2173, 2829, 3013, 3657, 5371, 6519, 6943, 9039, 16113, 20829, 49979, 123533, 149937, 159689, 284663, 370599, 479067, 853989, 6547249, 19641747]

約数ペア:

[(1, 19641747), (3, 6547249), (23, 853989), (41, 479067), (53, 370599), (69, 284663), (123, 159689), (131, 149937), (159, 123533), (393, 49979), (943, 20829), (1219, 16113), (2173, 9039), (2829, 6943), (3013, 6519), (3657, 5371)]