18638459931

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{300761}}^1$

素因数の和:301011

約数の個数: 32

約数和(自身を含む): 30721033728

約数和(自身を除く): 12082573797

約数列:

[1, 3, 7, 13, 21, 39, 91, 227, 273, 681, 1589, 2951, 4767, 8853, 20657, 61971, 300761, 902283, 2105327, 3909893, 6315981, 11729679, 27369251, 68272747, 82107753, 204818241, 477909229, 887545711, 1433727687, 2662637133, 6212819977, 18638459931]

約数ペア:

[(1, 18638459931), (3, 6212819977), (7, 2662637133), (13, 1433727687), (21, 887545711), (39, 477909229), (91, 204818241), (227, 82107753), (273, 68272747), (681, 27369251), (1589, 11729679), (2951, 6315981), (4767, 3909893), (8853, 2105327), (20657, 902283), (61971, 300761)]