28872740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111049}}^1$

素因数の和:111071

約数の個数: 24

約数和(自身を含む): 65297400

約数和(自身を除く): 36424660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 111049, 222098, 444196, 555245, 1110490, 1443637, 2220980, 2887274, 5774548, 7218185, 14436370, 28872740]

約数ペア:

[(1, 28872740), (2, 14436370), (4, 7218185), (5, 5774548), (10, 2887274), (13, 2220980), (20, 1443637), (26, 1110490), (52, 555245), (65, 444196), (130, 222098), (260, 111049)]