18977427

素因数分解:

$3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{1327}}^1$

素因数の和:1567

約数の個数: 24

約数和(自身を含む): 31489536

約数和(自身を除く): 12512109

約数列:

[1, 3, 7, 9, 21, 63, 227, 681, 1327, 1589, 2043, 3981, 4767, 9289, 11943, 14301, 27867, 83601, 301229, 903687, 2108603, 2711061, 6325809, 18977427]

約数ペア:

[(1, 18977427), (3, 6325809), (7, 2711061), (9, 2108603), (21, 903687), (63, 301229), (227, 83601), (681, 27867), (1327, 14301), (1589, 11943), (2043, 9289), (3981, 4767)]