21000391713

素因数分解:

$3^2\times 7^1\times {\mathrm{809}}^1\times {\mathrm{412039}}^1$

素因数の和:412861

約数の個数: 24

約数和(自身を含む): 34710249600

約数和(自身を除く): 13709857887

約数列:

[1, 3, 7, 9, 21, 63, 809, 2427, 5663, 7281, 16989, 50967, 412039, 1236117, 2884273, 3708351, 8652819, 25958457, 333339551, 1000018653, 2333376857, 3000055959, 7000130571, 21000391713]

約数ペア:

[(1, 21000391713), (3, 7000130571), (7, 3000055959), (9, 2333376857), (21, 1000018653), (63, 333339551), (809, 25958457), (2427, 8652819), (5663, 3708351), (7281, 2884273), (16989, 1236117), (50967, 412039)]