81268016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 176774400

約数和(自身を除く): 95506384

約数列:

[1, 2, 4, 8, 16, 19, 23, 38, 46, 59, 76, 92, 118, 152, 184, 197, 236, 304, 368, 394, 437, 472, 788, 874, 944, 1121, 1357, 1576, 1748, 2242, 2714, 3152, 3496, 3743, 4484, 4531, 5428, 6992, 7486, 8968, 9062, 10856, 11623, 14972, 17936, 18124, 21712, 23246, 25783, 29944, 36248, 46492, 51566, 59888, 72496, 86089, 92984, 103132, 172178, 185968, 206264, 220837, 267329, 344356, 412528, 441674, 534658, 688712, 883348, 1069316, 1377424, 1766696, 2138632, 3533392, 4277264, 5079251, 10158502, 20317004, 40634008, 81268016]

約数ペア:

[(1, 81268016), (2, 40634008), (4, 20317004), (8, 10158502), (16, 5079251), (19, 4277264), (23, 3533392), (38, 2138632), (46, 1766696), (59, 1377424), (76, 1069316), (92, 883348), (118, 688712), (152, 534658), (184, 441674), (197, 412528), (236, 344356), (304, 267329), (368, 220837), (394, 206264), (437, 185968), (472, 172178), (788, 103132), (874, 92984), (944, 86089), (1121, 72496), (1357, 59888), (1576, 51566), (1748, 46492), (2242, 36248), (2714, 29944), (3152, 25783), (3496, 23246), (3743, 21712), (4484, 18124), (4531, 17936), (5428, 14972), (6992, 11623), (7486, 10856), (8968, 9062)]