21204627

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 32025600

約数和(自身を除く): 10820973

約数列:

[1, 3, 17, 19, 51, 57, 79, 237, 277, 323, 831, 969, 1343, 1501, 4029, 4503, 4709, 5263, 14127, 15789, 21883, 25517, 65649, 76551, 89471, 268413, 372011, 415777, 1116033, 1247331, 7068209, 21204627]

約数ペア:

[(1, 21204627), (3, 7068209), (17, 1247331), (19, 1116033), (51, 415777), (57, 372011), (79, 268413), (237, 89471), (277, 76551), (323, 65649), (831, 25517), (969, 21883), (1343, 15789), (1501, 14127), (4029, 5263), (4503, 4709)]