21065213

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{313}}^1$

素因数の和:524

約数の個数: 16

約数和(自身を含む): 23632896

約数和(自身を除く): 2567683

約数列:

[1, 13, 31, 167, 313, 403, 2171, 4069, 5177, 9703, 52271, 67301, 126139, 679523, 1620401, 21065213]

約数ペア:

[(1, 21065213), (13, 1620401), (31, 679523), (167, 126139), (313, 67301), (403, 52271), (2171, 9703), (4069, 5177)]