19128921

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{15439}}^1$

素因数の和:15508

約数の個数: 16

約数和(自身を含む): 29644800

約数和(自身を除く): 10515879

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 15439, 46317, 108073, 324219, 910901, 2732703, 6376307, 19128921]

約数ペア:

[(1, 19128921), (3, 6376307), (7, 2732703), (21, 910901), (59, 324219), (177, 108073), (413, 46317), (1239, 15439)]