21980834

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{1487}}^1$

素因数の和:1897

約数の個数: 16

約数和(自身を含む): 34819200

約数和(自身を除く): 12838366

約数列:

[1, 2, 19, 38, 389, 778, 1487, 2974, 7391, 14782, 28253, 56506, 578443, 1156886, 10990417, 21980834]

約数ペア:

[(1, 21980834), (2, 10990417), (19, 1156886), (38, 578443), (389, 56506), (778, 28253), (1487, 14782), (2974, 7391)]