397960409

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{67121}}^1$

素因数の和:67157

約数の個数: 18

約数和(自身を含む): 508851882

約数和(自身を除く): 110891473

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 5929, 67121, 469847, 738331, 3288929, 5168317, 8121641, 36178219, 56851487, 397960409]

約数ペア:

[(1, 397960409), (7, 56851487), (11, 36178219), (49, 8121641), (77, 5168317), (121, 3288929), (539, 738331), (847, 469847), (5929, 67121)]