20784897

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6469}}^1$

素因数の和:6502

約数の個数: 32

約数和(自身を含む): 37267200

約数和(自身を除く): 16482303

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6469, 19407, 45283, 58221, 109973, 135849, 174663, 329919, 407547, 769811, 989757, 1222641, 2309433, 2969271, 6928299, 20784897]

約数ペア:

[(1, 20784897), (3, 6928299), (7, 2969271), (9, 2309433), (17, 1222641), (21, 989757), (27, 769811), (51, 407547), (63, 329919), (119, 174663), (153, 135849), (189, 109973), (357, 58221), (459, 45283), (1071, 19407), (3213, 6469)]