257130335

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{1277}}^1$

素因数の和:1823

約数の個数: 32

約数和(自身を含む): 385731072

約数和(自身を除く): 128600737

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 523, 1277, 2615, 3661, 5753, 6385, 8939, 14047, 18305, 28765, 40271, 44695, 70235, 98329, 201355, 491645, 667871, 3339355, 4675097, 7346581, 23375485, 36732905, 51426067, 257130335]

約数ペア:

[(1, 257130335), (5, 51426067), (7, 36732905), (11, 23375485), (35, 7346581), (55, 4675097), (77, 3339355), (385, 667871), (523, 491645), (1277, 201355), (2615, 98329), (3661, 70235), (5753, 44695), (6385, 40271), (8939, 28765), (14047, 18305)]