19561864

素因数分解:

$2^3\times 7^1\times {\mathrm{271}}^1\times {\mathrm{1289}}^1$

素因数の和:1573

約数の個数: 32

約数和(自身を含む): 42105600

約数和(自身を除く): 22543736

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 271, 542, 1084, 1289, 1897, 2168, 2578, 3794, 5156, 7588, 9023, 10312, 15176, 18046, 36092, 72184, 349319, 698638, 1397276, 2445233, 2794552, 4890466, 9780932, 19561864]

約数ペア:

[(1, 19561864), (2, 9780932), (4, 4890466), (7, 2794552), (8, 2445233), (14, 1397276), (28, 698638), (56, 349319), (271, 72184), (542, 36092), (1084, 18046), (1289, 15176), (1897, 10312), (2168, 9023), (2578, 7588), (3794, 5156)]