20566209

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 10226751

約数列:

[1, 3, 17, 23, 51, 69, 89, 197, 267, 391, 591, 1173, 1513, 2047, 3349, 4531, 4539, 6141, 10047, 13593, 17533, 34799, 52599, 77027, 104397, 231081, 298061, 403259, 894183, 1209777, 6855403, 20566209]

約数ペア:

[(1, 20566209), (3, 6855403), (17, 1209777), (23, 894183), (51, 403259), (69, 298061), (89, 231081), (197, 104397), (267, 77027), (391, 52599), (591, 34799), (1173, 17533), (1513, 13593), (2047, 10047), (3349, 6141), (4531, 4539)]