19729143

素因数分解:

$3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2221}}^1$

素因数の和:2284

約数の個数: 32

約数和(自身を含む): 34129920

約数和(自身を除く): 14400777

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 141, 189, 329, 423, 987, 1269, 2221, 2961, 6663, 8883, 15547, 19989, 46641, 59967, 104387, 139923, 313161, 419769, 730709, 939483, 2192127, 2818449, 6576381, 19729143]

約数ペア:

[(1, 19729143), (3, 6576381), (7, 2818449), (9, 2192127), (21, 939483), (27, 730709), (47, 419769), (63, 313161), (141, 139923), (189, 104387), (329, 59967), (423, 46641), (987, 19989), (1269, 15547), (2221, 8883), (2961, 6663)]