28401295

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 40845600

約数和(自身を除く): 12444305

約数列:

[1, 5, 13, 19, 29, 61, 65, 95, 145, 169, 247, 305, 377, 551, 793, 845, 1159, 1235, 1769, 1885, 2755, 3211, 3965, 4901, 5795, 7163, 8845, 10309, 15067, 16055, 22997, 24505, 33611, 35815, 51545, 75335, 93119, 114985, 168055, 195871, 298961, 436943, 465595, 979355, 1494805, 2184715, 5680259, 28401295]

約数ペア:

[(1, 28401295), (5, 5680259), (13, 2184715), (19, 1494805), (29, 979355), (61, 465595), (65, 436943), (95, 298961), (145, 195871), (169, 168055), (247, 114985), (305, 93119), (377, 75335), (551, 51545), (793, 35815), (845, 33611), (1159, 24505), (1235, 22997), (1769, 16055), (1885, 15067), (2755, 10309), (3211, 8845), (3965, 7163), (4901, 5795)]