19681987

素因数分解:

${\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 21934080

約数和(自身を除く): 2252093

約数列:

[1, 13, 59, 67, 383, 767, 871, 3953, 4979, 22597, 25661, 51389, 293761, 333593, 1513999, 19681987]

約数ペア:

[(1, 19681987), (13, 1513999), (59, 333593), (67, 293761), (383, 51389), (767, 25661), (871, 22597), (3953, 4979)]