18491473

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:87

約数の個数: 48

約数和(自身を含む): 26352000

約数和(自身を除く): 7860527

約数列:

[1, 7, 11, 13, 29, 49, 77, 91, 143, 169, 203, 319, 343, 377, 539, 637, 1001, 1183, 1421, 1859, 2233, 2639, 3773, 4147, 4459, 4901, 7007, 8281, 9947, 13013, 15631, 18473, 29029, 34307, 49049, 53911, 57967, 91091, 109417, 129311, 203203, 240149, 377377, 637637, 1422421, 1681043, 2641639, 18491473]

約数ペア:

[(1, 18491473), (7, 2641639), (11, 1681043), (13, 1422421), (29, 637637), (49, 377377), (77, 240149), (91, 203203), (143, 129311), (169, 109417), (203, 91091), (319, 57967), (343, 53911), (377, 49049), (539, 34307), (637, 29029), (1001, 18473), (1183, 15631), (1421, 13013), (1859, 9947), (2233, 8281), (2639, 7007), (3773, 4901), (4147, 4459)]