16719921

素因数分解:

$3^2\times {\mathrm{29}}^2\times {\mathrm{47}}^2$

素因数の和:158

約数の個数: 27

約数和(自身を含む): 25556011

約数和(自身を除く): 8836090

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 841, 1363, 2209, 2523, 4089, 6627, 7569, 12267, 19881, 39527, 64061, 118581, 192183, 355743, 576549, 1857769, 5573307, 16719921]

約数ペア:

[(1, 16719921), (3, 5573307), (9, 1857769), (29, 576549), (47, 355743), (87, 192183), (141, 118581), (261, 64061), (423, 39527), (841, 19881), (1363, 12267), (2209, 7569), (2523, 6627)]