21491638

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1237}}^1$

素因数の和:1336

約数の個数: 32

約数和(自身を含む): 39576384

約数和(自身を除く): 18084746

約数列:

[1, 2, 7, 14, 17, 34, 73, 119, 146, 238, 511, 1022, 1237, 1241, 2474, 2482, 8659, 8687, 17318, 17374, 21029, 42058, 90301, 147203, 180602, 294406, 632107, 1264214, 1535117, 3070234, 10745819, 21491638]

約数ペア:

[(1, 21491638), (2, 10745819), (7, 3070234), (14, 1535117), (17, 1264214), (34, 632107), (73, 294406), (119, 180602), (146, 147203), (238, 90301), (511, 42058), (1022, 21029), (1237, 17374), (1241, 17318), (2474, 8687), (2482, 8659)]