28783640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17551}}^1$

素因数の和:17603

約数の個数: 32

約数和(自身を含む): 66346560

約数和(自身を除く): 37562920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17551, 35102, 70204, 87755, 140408, 175510, 351020, 702040, 719591, 1439182, 2878364, 3597955, 5756728, 7195910, 14391820, 28783640]

約数ペア:

[(1, 28783640), (2, 14391820), (4, 7195910), (5, 5756728), (8, 3597955), (10, 2878364), (20, 1439182), (40, 719591), (41, 702040), (82, 351020), (164, 175510), (205, 140408), (328, 87755), (410, 70204), (820, 35102), (1640, 17551)]