81721055521

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{3485947}}^1$

素因数の和:3486168

約数の個数: 16

約数和(自身を含む): 99391349376

約数和(自身を除く): 17670293855

約数列:

[1, 7, 17, 119, 197, 1379, 3349, 23443, 3485947, 24401629, 59261099, 414827693, 686731559, 4807120913, 11674436503, 81721055521]

約数ペア:

[(1, 81721055521), (7, 11674436503), (17, 4807120913), (119, 686731559), (197, 414827693), (1379, 59261099), (3349, 24401629), (23443, 3485947)]