15972019947

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{646981}}^1$

素因数の和:647211

約数の個数: 24

約数和(自身を含む): 24963153488

約数和(自身を除く): 8991133541

約数列:

[1, 3, 9, 13, 39, 117, 211, 633, 1899, 2743, 8229, 24687, 646981, 1940943, 5822829, 8410753, 25232259, 75696777, 136512991, 409538973, 1228616919, 1774668883, 5324006649, 15972019947]

約数ペア:

[(1, 15972019947), (3, 5324006649), (9, 1774668883), (13, 1228616919), (39, 409538973), (117, 136512991), (211, 75696777), (633, 25232259), (1899, 8410753), (2743, 5822829), (8229, 1940943), (24687, 646981)]