28925920

素因数分解:

$2^5\times 5^1\times {\mathrm{347}}^1\times {\mathrm{521}}^1$

素因数の和:883

約数の個数: 48

約数和(自身を含む): 68665968

約数和(自身を除く): 39740048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 347, 521, 694, 1042, 1388, 1735, 2084, 2605, 2776, 3470, 4168, 5210, 5552, 6940, 8336, 10420, 11104, 13880, 16672, 20840, 27760, 41680, 55520, 83360, 180787, 361574, 723148, 903935, 1446296, 1807870, 2892592, 3615740, 5785184, 7231480, 14462960, 28925920]

約数ペア:

[(1, 28925920), (2, 14462960), (4, 7231480), (5, 5785184), (8, 3615740), (10, 2892592), (16, 1807870), (20, 1446296), (32, 903935), (40, 723148), (80, 361574), (160, 180787), (347, 83360), (521, 55520), (694, 41680), (1042, 27760), (1388, 20840), (1735, 16672), (2084, 13880), (2605, 11104), (2776, 10420), (3470, 8336), (4168, 6940), (5210, 5552)]