18648565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{1021}}^1$

素因数の和:1320

約数の個数: 16

約数和(自身を含む): 24209136

約数和(自身を除く): 5560571

約数列:

[1, 5, 13, 65, 281, 1021, 1405, 3653, 5105, 13273, 18265, 66365, 286901, 1434505, 3729713, 18648565]

約数ペア:

[(1, 18648565), (5, 3729713), (13, 1434505), (65, 286901), (281, 66365), (1021, 18265), (1405, 13273), (3653, 5105)]