28097505

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 50725584

約数和(自身を除く): 22628079

約数列:

[1, 3, 5, 9, 15, 41, 45, 97, 123, 157, 205, 291, 369, 471, 485, 615, 785, 873, 1413, 1455, 1845, 2355, 3977, 4365, 6437, 7065, 11931, 15229, 19311, 19885, 32185, 35793, 45687, 57933, 59655, 76145, 96555, 137061, 178965, 228435, 289665, 624389, 685305, 1873167, 3121945, 5619501, 9365835, 28097505]

約数ペア:

[(1, 28097505), (3, 9365835), (5, 5619501), (9, 3121945), (15, 1873167), (41, 685305), (45, 624389), (97, 289665), (123, 228435), (157, 178965), (205, 137061), (291, 96555), (369, 76145), (471, 59655), (485, 57933), (615, 45687), (785, 35793), (873, 32185), (1413, 19885), (1455, 19311), (1845, 15229), (2355, 11931), (3977, 7065), (4365, 6437)]