18909927

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 28068768

約数和(自身を除く): 9158841

約数列:

[1, 3, 9, 71, 101, 213, 293, 303, 639, 879, 909, 2637, 7171, 20803, 21513, 29593, 62409, 64539, 88779, 187227, 266337, 2101103, 6303309, 18909927]

約数ペア:

[(1, 18909927), (3, 6303309), (9, 2101103), (71, 266337), (101, 187227), (213, 88779), (293, 64539), (303, 62409), (639, 29593), (879, 21513), (909, 20803), (2637, 7171)]