399251294

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{31}}^2$

素因数の和:154

約数の個数: 72

約数和(自身を含む): 726518520

約数和(自身を除く): 327267226

約数列:

[1, 2, 13, 19, 26, 29, 31, 38, 58, 62, 247, 377, 403, 494, 551, 589, 754, 806, 841, 899, 961, 1102, 1178, 1682, 1798, 1922, 7163, 7657, 10933, 11687, 12493, 14326, 15314, 15979, 17081, 18259, 21866, 23374, 24986, 26071, 27869, 31958, 34162, 36518, 52142, 55738, 207727, 222053, 237367, 338923, 362297, 415454, 444106, 474734, 495349, 529511, 677846, 724594, 808201, 990698, 1059022, 1616402, 6439537, 6883643, 10506613, 12879074, 13767286, 15355819, 21013226, 30711638, 199625647, 399251294]

約数ペア:

[(1, 399251294), (2, 199625647), (13, 30711638), (19, 21013226), (26, 15355819), (29, 13767286), (31, 12879074), (38, 10506613), (58, 6883643), (62, 6439537), (247, 1616402), (377, 1059022), (403, 990698), (494, 808201), (551, 724594), (589, 677846), (754, 529511), (806, 495349), (841, 474734), (899, 444106), (961, 415454), (1102, 362297), (1178, 338923), (1682, 237367), (1798, 222053), (1922, 207727), (7163, 55738), (7657, 52142), (10933, 36518), (11687, 34162), (12493, 31958), (14326, 27869), (15314, 26071), (15979, 24986), (17081, 23374), (18259, 21866)]