291216292

素因数分解:

$2^2\times {\mathrm{211}}^1\times {\mathrm{389}}^1\times {\mathrm{887}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 513938880

約数和(自身を除く): 222722588

約数列:

[1, 2, 4, 211, 389, 422, 778, 844, 887, 1556, 1774, 3548, 82079, 164158, 187157, 328316, 345043, 374314, 690086, 748628, 1380172, 72804073, 145608146, 291216292]

約数ペア:

[(1, 291216292), (2, 145608146), (4, 72804073), (211, 1380172), (389, 748628), (422, 690086), (778, 374314), (844, 345043), (887, 328316), (1556, 187157), (1774, 164158), (3548, 82079)]