81279416

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{3847}}^1$

素因数の和:4011

約数の個数: 32

約数和(自身を含む): 161616000

約数和(自身を除く): 80336584

約数列:

[1, 2, 4, 8, 19, 38, 76, 139, 152, 278, 556, 1112, 2641, 3847, 5282, 7694, 10564, 15388, 21128, 30776, 73093, 146186, 292372, 534733, 584744, 1069466, 2138932, 4277864, 10159927, 20319854, 40639708, 81279416]

約数ペア:

[(1, 81279416), (2, 40639708), (4, 20319854), (8, 10159927), (19, 4277864), (38, 2138932), (76, 1069466), (139, 584744), (152, 534733), (278, 292372), (556, 146186), (1112, 73093), (2641, 30776), (3847, 21128), (5282, 15388), (7694, 10564)]