221534872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{20681}}^1$

素因数の和:20803

約数の個数: 32

約数和(自身を含む): 451694880

約数和(自身を除く): 230160008

約数列:

[1, 2, 4, 8, 13, 26, 52, 103, 104, 206, 412, 824, 1339, 2678, 5356, 10712, 20681, 41362, 82724, 165448, 268853, 537706, 1075412, 2130143, 2150824, 4260286, 8520572, 17041144, 27691859, 55383718, 110767436, 221534872]

約数ペア:

[(1, 221534872), (2, 110767436), (4, 55383718), (8, 27691859), (13, 17041144), (26, 8520572), (52, 4260286), (103, 2150824), (104, 2130143), (206, 1075412), (412, 537706), (824, 268853), (1339, 165448), (2678, 82724), (5356, 41362), (10712, 20681)]