19717689

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1\times {\mathrm{307}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 26808320

約数和(自身を除く): 7090631

約数列:

[1, 3, 79, 237, 271, 307, 813, 921, 21409, 24253, 64227, 72759, 83197, 249591, 6572563, 19717689]

約数ペア:

[(1, 19717689), (3, 6572563), (79, 249591), (237, 83197), (271, 72759), (307, 64227), (813, 24253), (921, 21409)]