213684880

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{6661}}^1$

素因数の和:7075

約数の個数: 40

約数和(自身を含む): 498131064

約数和(自身を除く): 284446184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 1604, 2005, 3208, 4010, 6416, 6661, 8020, 13322, 16040, 26644, 32080, 33305, 53288, 66610, 106576, 133220, 266440, 532880, 2671061, 5342122, 10684244, 13355305, 21368488, 26710610, 42736976, 53421220, 106842440, 213684880]

約数ペア:

[(1, 213684880), (2, 106842440), (4, 53421220), (5, 42736976), (8, 26710610), (10, 21368488), (16, 13355305), (20, 10684244), (40, 5342122), (80, 2671061), (401, 532880), (802, 266440), (1604, 133220), (2005, 106576), (3208, 66610), (4010, 53288), (6416, 33305), (6661, 32080), (8020, 26644), (13322, 16040)]