40288664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20389}}^1$

素因数の和:20427

約数の個数: 32

約数和(自身を含む): 85638000

約数和(自身を除く): 45349336

約数列:

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

約数ペア:

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