21378178

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{7877}}^1$

素因数の和:7961

約数の個数: 16

約数和(自身を含む): 34032960

約数和(自身を除く): 12654782

約数列:

[1, 2, 23, 46, 59, 118, 1357, 2714, 7877, 15754, 181171, 362342, 464743, 929486, 10689089, 21378178]

約数ペア:

[(1, 21378178), (2, 10689089), (23, 929486), (46, 464743), (59, 362342), (118, 181171), (1357, 15754), (2714, 7877)]