80489516

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{20939}}^1$

素因数の和:21005

約数の個数: 18

約数和(自身を含む): 145553940

約数和(自身を除く): 65064424

約数列:

[1, 2, 4, 31, 62, 124, 961, 1922, 3844, 20939, 41878, 83756, 649109, 1298218, 2596436, 20122379, 40244758, 80489516]

約数ペア:

[(1, 80489516), (2, 40244758), (4, 20122379), (31, 2596436), (62, 1298218), (124, 649109), (961, 83756), (1922, 41878), (3844, 20939)]