20563881

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 31030272

約数和(自身を除く): 10466391

約数列:

[1, 3, 13, 31, 39, 73, 93, 219, 233, 403, 699, 949, 1209, 2263, 2847, 3029, 6789, 7223, 9087, 17009, 21669, 29419, 51027, 88257, 93899, 221117, 281697, 527279, 663351, 1581837, 6854627, 20563881]

約数ペア:

[(1, 20563881), (3, 6854627), (13, 1581837), (31, 663351), (39, 527279), (73, 281697), (93, 221117), (219, 93899), (233, 88257), (403, 51027), (699, 29419), (949, 21669), (1209, 17009), (2263, 9087), (2847, 7223), (3029, 6789)]