21035511

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6547}}^1$

素因数の和:6580

約数の個数: 32

約数和(自身を含む): 37716480

約数和(自身を除く): 16680969

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6547, 19641, 45829, 58923, 111299, 137487, 176769, 333897, 412461, 779093, 1001691, 1237383, 2337279, 3005073, 7011837, 21035511]

約数ペア:

[(1, 21035511), (3, 7011837), (7, 3005073), (9, 2337279), (17, 1237383), (21, 1001691), (27, 779093), (51, 412461), (63, 333897), (119, 176769), (153, 137487), (189, 111299), (357, 58923), (459, 45829), (1071, 19641), (3213, 6547)]