78400004

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{4889}}^1$

素因数の和:5123

約数の個数: 24

約数和(自身を含む): 145135200

約数和(自身を除く): 66735196

約数列:

[1, 2, 4, 19, 38, 76, 211, 422, 844, 4009, 4889, 8018, 9778, 16036, 19556, 92891, 185782, 371564, 1031579, 2063158, 4126316, 19600001, 39200002, 78400004]

約数ペア:

[(1, 78400004), (2, 39200002), (4, 19600001), (19, 4126316), (38, 2063158), (76, 1031579), (211, 371564), (422, 185782), (844, 92891), (4009, 19556), (4889, 16036), (8018, 9778)]