221279289

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{853}}^1\times {\mathrm{1123}}^1$

素因数の和:1997

約数の個数: 32

約数和(自身を含む): 368600064

約数和(自身を除く): 147320775

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 853, 1123, 2559, 3369, 5971, 7861, 9383, 12353, 17913, 23583, 28149, 37059, 65681, 86471, 197043, 259413, 957919, 2873757, 6705433, 10537109, 20116299, 31611327, 73759763, 221279289]

約数ペア:

[(1, 221279289), (3, 73759763), (7, 31611327), (11, 20116299), (21, 10537109), (33, 6705433), (77, 2873757), (231, 957919), (853, 259413), (1123, 197043), (2559, 86471), (3369, 65681), (5971, 37059), (7861, 28149), (9383, 23583), (12353, 17913)]