20876895

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 39416832

約数和(自身を除く): 18539937

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 127, 195, 281, 381, 585, 635, 843, 1143, 1405, 1651, 1905, 2529, 3653, 4215, 4953, 5715, 8255, 10959, 12645, 14859, 18265, 24765, 32877, 35687, 54795, 74295, 107061, 164385, 178435, 321183, 463931, 535305, 1391793, 1605915, 2319655, 4175379, 6958965, 20876895]

約数ペア:

[(1, 20876895), (3, 6958965), (5, 4175379), (9, 2319655), (13, 1605915), (15, 1391793), (39, 535305), (45, 463931), (65, 321183), (117, 178435), (127, 164385), (195, 107061), (281, 74295), (381, 54795), (585, 35687), (635, 32877), (843, 24765), (1143, 18265), (1405, 14859), (1651, 12645), (1905, 10959), (2529, 8255), (3653, 5715), (4215, 4953)]