2005017921

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{439}}^1$

素因数の和:803

約数の個数: 64

約数和(自身を含む): 3252480000

約数和(自身を除く): 1247462079

約数列:

[1, 3, 9, 19, 27, 29, 57, 87, 171, 261, 307, 439, 513, 551, 783, 921, 1317, 1653, 2763, 3951, 4959, 5833, 8289, 8341, 8903, 11853, 12731, 14877, 17499, 25023, 26709, 38193, 52497, 75069, 80127, 114579, 134773, 157491, 169157, 225207, 240381, 241889, 343737, 404319, 507471, 725667, 1212957, 1522413, 2177001, 2560687, 3638871, 3908417, 4567239, 6531003, 7682061, 11725251, 23046183, 35175753, 69138549, 74259923, 105527259, 222779769, 668339307, 2005017921]

約数ペア:

[(1, 2005017921), (3, 668339307), (9, 222779769), (19, 105527259), (27, 74259923), (29, 69138549), (57, 35175753), (87, 23046183), (171, 11725251), (261, 7682061), (307, 6531003), (439, 4567239), (513, 3908417), (551, 3638871), (783, 2560687), (921, 2177001), (1317, 1522413), (1653, 1212957), (2763, 725667), (3951, 507471), (4959, 404319), (5833, 343737), (8289, 241889), (8341, 240381), (8903, 225207), (11853, 169157), (12731, 157491), (14877, 134773), (17499, 114579), (25023, 80127), (26709, 75069), (38193, 52497)]