20656376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2393}}^1$

素因数の和:2495

約数の個数: 32

約数和(自身を含む): 42230160

約数和(自身を除く): 21573784

約数列:

[1, 2, 4, 8, 13, 26, 52, 83, 104, 166, 332, 664, 1079, 2158, 2393, 4316, 4786, 8632, 9572, 19144, 31109, 62218, 124436, 198619, 248872, 397238, 794476, 1588952, 2582047, 5164094, 10328188, 20656376]

約数ペア:

[(1, 20656376), (2, 10328188), (4, 5164094), (8, 2582047), (13, 1588952), (26, 794476), (52, 397238), (83, 248872), (104, 198619), (166, 124436), (332, 62218), (664, 31109), (1079, 19144), (2158, 9572), (2393, 8632), (4316, 4786)]