27778815

素因数分解:

$3^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1381}}^1$

素因数の和:1544

約数の個数: 32

約数和(自身を含む): 49752000

約数和(自身を除く): 21973185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 149, 447, 745, 1341, 1381, 2235, 4023, 4143, 6705, 6905, 12429, 20115, 20715, 37287, 62145, 186435, 205769, 617307, 1028845, 1851921, 3086535, 5555763, 9259605, 27778815]

約数ペア:

[(1, 27778815), (3, 9259605), (5, 5555763), (9, 3086535), (15, 1851921), (27, 1028845), (45, 617307), (135, 205769), (149, 186435), (447, 62145), (745, 37287), (1341, 20715), (1381, 20115), (2235, 12429), (4023, 6905), (4143, 6705)]