21169993

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 23772672

約数和(自身を除く): 2602679

約数列:

[1, 13, 31, 131, 401, 403, 1703, 4061, 5213, 12431, 52531, 52793, 161603, 682903, 1628461, 21169993]

約数ペア:

[(1, 21169993), (13, 1628461), (31, 682903), (131, 161603), (401, 52793), (403, 52531), (1703, 12431), (4061, 5213)]