21279164

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{6829}}^1$

素因数の和:6893

約数の個数: 24

約数和(自身を含む): 40160400

約数和(自身を除く): 18881236

約数列:

[1, 2, 4, 19, 38, 41, 76, 82, 164, 779, 1558, 3116, 6829, 13658, 27316, 129751, 259502, 279989, 519004, 559978, 1119956, 5319791, 10639582, 21279164]

約数ペア:

[(1, 21279164), (2, 10639582), (4, 5319791), (19, 1119956), (38, 559978), (41, 519004), (76, 279989), (82, 259502), (164, 129751), (779, 27316), (1558, 13658), (3116, 6829)]