28487740

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13829}}^1$

素因数の和:13941

約数の個数: 24

約数和(自身を含む): 60409440

約数和(自身を除く): 31921700

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 13829, 27658, 55316, 69145, 138290, 276580, 1424387, 2848774, 5697548, 7121935, 14243870, 28487740]

約数ペア:

[(1, 28487740), (2, 14243870), (4, 7121935), (5, 5697548), (10, 2848774), (20, 1424387), (103, 276580), (206, 138290), (412, 69145), (515, 55316), (1030, 27658), (2060, 13829)]