18378318721

素因数分解:

$7^2\times {\mathrm{31}}^2\times {\mathrm{390289}}^1$

素因数の和:390365

約数の個数: 18

約数和(自身を含む): 22090804290

約数和(自身を除く): 3712485569

約数列:

[1, 7, 31, 49, 217, 961, 1519, 6727, 47089, 390289, 2732023, 12098959, 19124161, 84692713, 375067729, 592848991, 2625474103, 18378318721]

約数ペア:

[(1, 18378318721), (7, 2625474103), (31, 592848991), (49, 375067729), (217, 84692713), (961, 19124161), (1519, 12098959), (6727, 2732023), (47089, 390289)]