28883855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 19500145

約数列:

[1, 5, 7, 11, 13, 29, 35, 55, 65, 77, 91, 143, 145, 199, 203, 319, 377, 385, 455, 715, 995, 1001, 1015, 1393, 1595, 1885, 2189, 2233, 2587, 2639, 4147, 5005, 5771, 6965, 10945, 11165, 12935, 13195, 15323, 18109, 20735, 28457, 28855, 29029, 40397, 63481, 75023, 76615, 90545, 142285, 145145, 199199, 201985, 317405, 375115, 444367, 525161, 825253, 995995, 2221835, 2625805, 4126265, 5776771, 28883855]

約数ペア:

[(1, 28883855), (5, 5776771), (7, 4126265), (11, 2625805), (13, 2221835), (29, 995995), (35, 825253), (55, 525161), (65, 444367), (77, 375115), (91, 317405), (143, 201985), (145, 199199), (199, 145145), (203, 142285), (319, 90545), (377, 76615), (385, 75023), (455, 63481), (715, 40397), (995, 29029), (1001, 28855), (1015, 28457), (1393, 20735), (1595, 18109), (1885, 15323), (2189, 13195), (2233, 12935), (2587, 11165), (2639, 10945), (4147, 6965), (5005, 5771)]