19968963

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11549757

約数列:

[1, 3, 7, 21, 59, 71, 177, 213, 227, 413, 497, 681, 1239, 1491, 1589, 4189, 4767, 12567, 13393, 16117, 29323, 40179, 48351, 87969, 93751, 112819, 281253, 338457, 950903, 2852709, 6656321, 19968963]

約数ペア:

[(1, 19968963), (3, 6656321), (7, 2852709), (21, 950903), (59, 338457), (71, 281253), (177, 112819), (213, 93751), (227, 87969), (413, 48351), (497, 40179), (681, 29323), (1239, 16117), (1491, 13393), (1589, 12567), (4189, 4767)]