18723813

素因数分解:

$3^1\times {\mathrm{37}}^2\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:221

約数の個数: 24

約数和(自身を含む): 26474112

約数和(自身を除く): 7750299

約数列:

[1, 3, 37, 47, 97, 111, 141, 291, 1369, 1739, 3589, 4107, 4559, 5217, 10767, 13677, 64343, 132793, 168683, 193029, 398379, 506049, 6241271, 18723813]

約数ペア:

[(1, 18723813), (3, 6241271), (37, 506049), (47, 398379), (97, 193029), (111, 168683), (141, 132793), (291, 64343), (1369, 13677), (1739, 10767), (3589, 5217), (4107, 4559)]