21121478

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1187}}^1$

素因数の和:1268

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17198650

約数列:

[1, 2, 7, 14, 31, 41, 62, 82, 217, 287, 434, 574, 1187, 1271, 2374, 2542, 8309, 8897, 16618, 17794, 36797, 48667, 73594, 97334, 257579, 340669, 515158, 681338, 1508677, 3017354, 10560739, 21121478]

約数ペア:

[(1, 21121478), (2, 10560739), (7, 3017354), (14, 1508677), (31, 681338), (41, 515158), (62, 340669), (82, 257579), (217, 97334), (287, 73594), (434, 48667), (574, 36797), (1187, 17794), (1271, 16618), (2374, 8897), (2542, 8309)]