80577328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20389}}^1$

素因数の和:20429

約数の個数: 40

約数和(自身を含む): 176985200

約数和(自身を除く): 96407872

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20389, 40778, 81556, 163112, 265057, 326224, 387391, 530114, 774782, 1060228, 1549564, 2120456, 3099128, 4240912, 5036083, 6198256, 10072166, 20144332, 40288664, 80577328]

約数ペア:

[(1, 80577328), (2, 40288664), (4, 20144332), (8, 10072166), (13, 6198256), (16, 5036083), (19, 4240912), (26, 3099128), (38, 2120456), (52, 1549564), (76, 1060228), (104, 774782), (152, 530114), (208, 387391), (247, 326224), (304, 265057), (494, 163112), (988, 81556), (1976, 40778), (3952, 20389)]