18969223

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 24086832

約数和(自身を除く): 5117609

約数列:

[1, 7, 13, 49, 91, 97, 307, 637, 679, 1261, 2149, 3991, 4753, 8827, 15043, 27937, 29779, 61789, 195559, 208453, 387127, 1459171, 2709889, 18969223]

約数ペア:

[(1, 18969223), (7, 2709889), (13, 1459171), (49, 387127), (91, 208453), (97, 195559), (307, 61789), (637, 29779), (679, 27937), (1261, 15043), (2149, 8827), (3991, 4753)]