28556440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64901}}^1$

素因数の和:64923

約数の個数: 32

約数和(自身を含む): 70094160

約数和(自身を除く): 41537720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64901, 129802, 259604, 324505, 519208, 649010, 713911, 1298020, 1427822, 2596040, 2855644, 3569555, 5711288, 7139110, 14278220, 28556440]

約数ペア:

[(1, 28556440), (2, 14278220), (4, 7139110), (5, 5711288), (8, 3569555), (10, 2855644), (11, 2596040), (20, 1427822), (22, 1298020), (40, 713911), (44, 649010), (55, 519208), (88, 324505), (110, 259604), (220, 129802), (440, 64901)]