18420913

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:293

約数の個数: 24

約数和(自身を含む): 22573824

約数和(自身を除く): 4152911

約数列:

[1, 7, 31, 49, 67, 181, 217, 469, 1267, 1519, 2077, 3283, 5611, 8869, 12127, 14539, 39277, 84889, 101773, 274939, 375937, 594223, 2631559, 18420913]

約数ペア:

[(1, 18420913), (7, 2631559), (31, 594223), (49, 375937), (67, 274939), (181, 101773), (217, 84889), (469, 39277), (1267, 14539), (1519, 12127), (2077, 8869), (3283, 5611)]