678244671

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{644107}}^1$

素因数の和:644132

約数の個数: 20

約数和(自身を含む): 1091118952

約数和(自身を除く): 412874281

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 644107, 1932321, 5796963, 8373391, 17390889, 25120173, 52172667, 75360519, 226081557, 678244671]

約数ペア:

[(1, 678244671), (3, 226081557), (9, 75360519), (13, 52172667), (27, 25120173), (39, 17390889), (81, 8373391), (117, 5796963), (351, 1932321), (1053, 644107)]