81915392

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:459

約数の個数: 80

約数和(自身を含む): 182404992

約数和(自身を除く): 100489600

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 248, 256, 397, 403, 416, 496, 512, 794, 806, 832, 992, 1588, 1612, 1664, 1984, 3176, 3224, 3328, 3968, 5161, 6352, 6448, 6656, 7936, 10322, 12307, 12704, 12896, 15872, 20644, 24614, 25408, 25792, 41288, 49228, 50816, 51584, 82576, 98456, 101632, 103168, 159991, 165152, 196912, 203264, 206336, 319982, 330304, 393824, 639964, 660608, 787648, 1279928, 1321216, 1575296, 2559856, 2642432, 3150592, 5119712, 6301184, 10239424, 20478848, 40957696, 81915392]

約数ペア:

[(1, 81915392), (2, 40957696), (4, 20478848), (8, 10239424), (13, 6301184), (16, 5119712), (26, 3150592), (31, 2642432), (32, 2559856), (52, 1575296), (62, 1321216), (64, 1279928), (104, 787648), (124, 660608), (128, 639964), (208, 393824), (248, 330304), (256, 319982), (397, 206336), (403, 203264), (416, 196912), (496, 165152), (512, 159991), (794, 103168), (806, 101632), (832, 98456), (992, 82576), (1588, 51584), (1612, 50816), (1664, 49228), (1984, 41288), (3176, 25792), (3224, 25408), (3328, 24614), (3968, 20644), (5161, 15872), (6352, 12896), (6448, 12704), (6656, 12307), (7936, 10322)]