28665567

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 50239488

約数和(自身を除く): 21573921

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 73, 161, 207, 219, 271, 483, 511, 657, 813, 1449, 1533, 1679, 1897, 2439, 4599, 5037, 5691, 6233, 11753, 15111, 17073, 18699, 19783, 35259, 43631, 56097, 59349, 105777, 130893, 138481, 178047, 392679, 415443, 455009, 1246329, 1365027, 3185063, 4095081, 9555189, 28665567]

約数ペア:

[(1, 28665567), (3, 9555189), (7, 4095081), (9, 3185063), (21, 1365027), (23, 1246329), (63, 455009), (69, 415443), (73, 392679), (161, 178047), (207, 138481), (219, 130893), (271, 105777), (483, 59349), (511, 56097), (657, 43631), (813, 35259), (1449, 19783), (1533, 18699), (1679, 17073), (1897, 15111), (2439, 11753), (4599, 6233), (5037, 5691)]