20988972

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{25349}}^1$

素因数の和:25382

約数の個数: 36

約数和(自身を含む): 55364400

約数和(自身を除く): 34375428

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 828, 25349, 50698, 76047, 101396, 152094, 228141, 304188, 456282, 583027, 912564, 1166054, 1749081, 2332108, 3498162, 5247243, 6996324, 10494486, 20988972]

約数ペア:

[(1, 20988972), (2, 10494486), (3, 6996324), (4, 5247243), (6, 3498162), (9, 2332108), (12, 1749081), (18, 1166054), (23, 912564), (36, 583027), (46, 456282), (69, 304188), (92, 228141), (138, 152094), (207, 101396), (276, 76047), (414, 50698), (828, 25349)]