20806881

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10297119

約数列:

[1, 3, 19, 23, 57, 59, 69, 177, 269, 437, 807, 1121, 1311, 1357, 3363, 4071, 5111, 6187, 15333, 15871, 18561, 25783, 47613, 77349, 117553, 301549, 352659, 365033, 904647, 1095099, 6935627, 20806881]

約数ペア:

[(1, 20806881), (3, 6935627), (19, 1095099), (23, 904647), (57, 365033), (59, 352659), (69, 301549), (177, 117553), (269, 77349), (437, 47613), (807, 25783), (1121, 18561), (1311, 15871), (1357, 15333), (3363, 6187), (4071, 5111)]