20423991

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20693}}^1$

素因数の和:20750

約数の個数: 16

約数和(自身を含む): 31785984

約数和(自身を除く): 11361993

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20693, 62079, 144851, 434553, 972571, 2917713, 6807997, 20423991]

約数ペア:

[(1, 20423991), (3, 6807997), (7, 2917713), (21, 972571), (47, 434553), (141, 144851), (329, 62079), (987, 20693)]