19900923

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{49877}}^1$

素因数の和:49906

約数の個数: 16

約数和(自身を含む): 31921920

約数和(自身を除く): 12020997

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 49877, 149631, 349139, 947663, 1047417, 2842989, 6633641, 19900923]

約数ペア:

[(1, 19900923), (3, 6633641), (7, 2842989), (19, 1047417), (21, 947663), (57, 349139), (133, 149631), (399, 49877)]