20502825

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{797}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 39580800

約数和(自身を除く): 19077975

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 343, 525, 735, 797, 1029, 1225, 1715, 2391, 3675, 3985, 5145, 5579, 8575, 11955, 16737, 19925, 25725, 27895, 39053, 59775, 83685, 117159, 139475, 195265, 273371, 418425, 585795, 820113, 976325, 1366855, 2928975, 4100565, 6834275, 20502825]

約数ペア:

[(1, 20502825), (3, 6834275), (5, 4100565), (7, 2928975), (15, 1366855), (21, 976325), (25, 820113), (35, 585795), (49, 418425), (75, 273371), (105, 195265), (147, 139475), (175, 117159), (245, 83685), (343, 59775), (525, 39053), (735, 27895), (797, 25725), (1029, 19925), (1225, 16737), (1715, 11955), (2391, 8575), (3675, 5579), (3985, 5145)]