20591018

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 36655104

約数和(自身を除く): 16064086

約数列:

[1, 2, 7, 14, 37, 74, 127, 254, 259, 313, 518, 626, 889, 1778, 2191, 4382, 4699, 9398, 11581, 23162, 32893, 39751, 65786, 79502, 81067, 162134, 278257, 556514, 1470787, 2941574, 10295509, 20591018]

約数ペア:

[(1, 20591018), (2, 10295509), (7, 2941574), (14, 1470787), (37, 556514), (74, 278257), (127, 162134), (254, 81067), (259, 79502), (313, 65786), (518, 39751), (626, 32893), (889, 23162), (1778, 11581), (2191, 9398), (4382, 4699)]