18916290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2081}}^1$

素因数の和:2195

約数の個数: 48

約数和(自身を含む): 49693176

約数和(自身を除く): 30776886

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 101, 202, 303, 505, 606, 909, 1010, 1515, 1818, 2081, 3030, 4162, 4545, 6243, 9090, 10405, 12486, 18729, 20810, 31215, 37458, 62430, 93645, 187290, 210181, 420362, 630543, 1050905, 1261086, 1891629, 2101810, 3152715, 3783258, 6305430, 9458145, 18916290]

約数ペア:

[(1, 18916290), (2, 9458145), (3, 6305430), (5, 3783258), (6, 3152715), (9, 2101810), (10, 1891629), (15, 1261086), (18, 1050905), (30, 630543), (45, 420362), (90, 210181), (101, 187290), (202, 93645), (303, 62430), (505, 37458), (606, 31215), (909, 20810), (1010, 18729), (1515, 12486), (1818, 10405), (2081, 9090), (3030, 6243), (4162, 4545)]