217989863

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{21977}}^1$

素因数の和:22106

約数の個数: 16

約数和(自身を含む): 270768960

約数和(自身を除く): 52779097

約数列:

[1, 7, 13, 91, 109, 763, 1417, 9919, 21977, 153839, 285701, 1999907, 2395493, 16768451, 31141409, 217989863]

約数ペア:

[(1, 217989863), (7, 31141409), (13, 16768451), (91, 2395493), (109, 1999907), (763, 285701), (1417, 153839), (9919, 21977)]