21392119

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3923}}^1$

素因数の和:3990

約数の個数: 16

約数和(自身を含む): 26369280

約数和(自身を除く): 4977161

約数列:

[1, 7, 19, 41, 133, 287, 779, 3923, 5453, 27461, 74537, 160843, 521759, 1125901, 3056017, 21392119]

約数ペア:

[(1, 21392119), (7, 3056017), (19, 1125901), (41, 521759), (133, 160843), (287, 74537), (779, 27461), (3923, 5453)]