20145255

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17594265

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 59, 65, 85, 103, 177, 195, 221, 255, 295, 309, 515, 663, 767, 885, 1003, 1105, 1339, 1545, 1751, 2301, 3009, 3315, 3835, 4017, 5015, 5253, 6077, 6695, 8755, 11505, 13039, 15045, 18231, 20085, 22763, 26265, 30385, 39117, 65195, 68289, 79001, 91155, 103309, 113815, 195585, 237003, 309927, 341445, 395005, 516545, 1185015, 1343017, 1549635, 4029051, 6715085, 20145255]

約数ペア:

[(1, 20145255), (3, 6715085), (5, 4029051), (13, 1549635), (15, 1343017), (17, 1185015), (39, 516545), (51, 395005), (59, 341445), (65, 309927), (85, 237003), (103, 195585), (177, 113815), (195, 103309), (221, 91155), (255, 79001), (295, 68289), (309, 65195), (515, 39117), (663, 30385), (767, 26265), (885, 22763), (1003, 20085), (1105, 18231), (1339, 15045), (1545, 13039), (1751, 11505), (2301, 8755), (3009, 6695), (3315, 6077), (3835, 5253), (4017, 5015)]