28009215

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 54812160

約数和(自身を除く): 26802945

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 117, 127, 145, 169, 195, 261, 377, 381, 435, 507, 585, 635, 845, 1131, 1143, 1305, 1521, 1651, 1885, 1905, 2535, 3393, 3683, 4901, 4953, 5655, 5715, 7605, 8255, 11049, 14703, 14859, 16965, 18415, 21463, 24505, 24765, 33147, 44109, 47879, 55245, 64389, 73515, 74295, 107315, 143637, 165735, 193167, 220545, 239395, 321945, 430911, 622427, 718185, 965835, 1867281, 2154555, 3112135, 5601843, 9336405, 28009215]

約数ペア:

[(1, 28009215), (3, 9336405), (5, 5601843), (9, 3112135), (13, 2154555), (15, 1867281), (29, 965835), (39, 718185), (45, 622427), (65, 430911), (87, 321945), (117, 239395), (127, 220545), (145, 193167), (169, 165735), (195, 143637), (261, 107315), (377, 74295), (381, 73515), (435, 64389), (507, 55245), (585, 47879), (635, 44109), (845, 33147), (1131, 24765), (1143, 24505), (1305, 21463), (1521, 18415), (1651, 16965), (1885, 14859), (1905, 14703), (2535, 11049), (3393, 8255), (3683, 7605), (4901, 5715), (4953, 5655)]