21841755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1109}}^1$

素因数の和:1231

約数の個数: 32

約数和(自身を含む): 38041920

約数和(自身を除く): 16200165

約数列:

[1, 3, 5, 13, 15, 39, 65, 101, 195, 303, 505, 1109, 1313, 1515, 3327, 3939, 5545, 6565, 14417, 16635, 19695, 43251, 72085, 112009, 216255, 336027, 560045, 1456117, 1680135, 4368351, 7280585, 21841755]

約数ペア:

[(1, 21841755), (3, 7280585), (5, 4368351), (13, 1680135), (15, 1456117), (39, 560045), (65, 336027), (101, 216255), (195, 112009), (303, 72085), (505, 43251), (1109, 19695), (1313, 16635), (1515, 14417), (3327, 6565), (3939, 5545)]