20945617

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{11827}}^1$

素因数の和:11868

約数の個数: 16

約数和(自身を含む): 27251712

約数和(自身を除く): 6306095

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 11827, 82789, 130097, 272021, 910679, 1904147, 2992231, 20945617]

約数ペア:

[(1, 20945617), (7, 2992231), (11, 1904147), (23, 910679), (77, 272021), (161, 130097), (253, 82789), (1771, 11827)]