278005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1$

素因数の和:85

約数の個数: 24

約数和(自身を含む): 421632

約数和(自身を除く): 143627

約数列:

[1, 5, 7, 13, 35, 47, 65, 91, 169, 235, 329, 455, 611, 845, 1183, 1645, 3055, 4277, 5915, 7943, 21385, 39715, 55601, 278005]

約数ペア:

[(1, 278005), (5, 55601), (7, 39715), (13, 21385), (35, 7943), (47, 5915), (65, 4277), (91, 3055), (169, 1645), (235, 1183), (329, 845), (455, 611)]