21499659

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2131}}^1$

素因数の和:2215

約数の個数: 24

約数和(自身を含む): 33259200

約数和(自身を除く): 11759541

約数列:

[1, 3, 9, 19, 57, 59, 171, 177, 531, 1121, 2131, 3363, 6393, 10089, 19179, 40489, 121467, 125729, 364401, 377187, 1131561, 2388851, 7166553, 21499659]

約数ペア:

[(1, 21499659), (3, 7166553), (9, 2388851), (19, 1131561), (57, 377187), (59, 364401), (171, 125729), (177, 121467), (531, 40489), (1121, 19179), (2131, 10089), (3363, 6393)]