1999403991

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{21937}}^1$

素因数の和:22016

約数の個数: 48

約数和(自身を含む): 3353881440

約数和(自身を除く): 1354477449

約数列:

[1, 3, 9, 13, 19, 39, 41, 57, 117, 123, 171, 247, 369, 533, 741, 779, 1599, 2223, 2337, 4797, 7011, 10127, 21937, 30381, 65811, 91143, 197433, 285181, 416803, 855543, 899417, 1250409, 2566629, 2698251, 3751227, 5418439, 8094753, 11692421, 16255317, 17088923, 35077263, 48765951, 51266769, 105231789, 153800307, 222155999, 666467997, 1999403991]

約数ペア:

[(1, 1999403991), (3, 666467997), (9, 222155999), (13, 153800307), (19, 105231789), (39, 51266769), (41, 48765951), (57, 35077263), (117, 17088923), (123, 16255317), (171, 11692421), (247, 8094753), (369, 5418439), (533, 3751227), (741, 2698251), (779, 2566629), (1599, 1250409), (2223, 899417), (2337, 855543), (4797, 416803), (7011, 285181), (10127, 197433), (21937, 91143), (30381, 65811)]