21969871

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{15017}}^1$

素因数の和:15054

約数の個数: 16

約数和(自身を含む): 28834560

約数和(自身を除く): 6864689

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 15017, 105119, 165187, 285323, 1156309, 1997261, 3138553, 21969871]

約数ペア:

[(1, 21969871), (7, 3138553), (11, 1997261), (19, 1156309), (77, 285323), (133, 165187), (209, 105119), (1463, 15017)]