28356723

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:557

約数の個数: 40

約数和(自身を含む): 45720576

約数和(自身を除く): 17363853

約数列:

[1, 3, 9, 23, 27, 31, 69, 81, 93, 207, 279, 491, 621, 713, 837, 1473, 1863, 2139, 2511, 4419, 6417, 11293, 13257, 15221, 19251, 33879, 39771, 45663, 57753, 101637, 136989, 304911, 350083, 410967, 914733, 1050249, 1232901, 3150747, 9452241, 28356723]

約数ペア:

[(1, 28356723), (3, 9452241), (9, 3150747), (23, 1232901), (27, 1050249), (31, 914733), (69, 410967), (81, 350083), (93, 304911), (207, 136989), (279, 101637), (491, 57753), (621, 45663), (713, 39771), (837, 33879), (1473, 19251), (1863, 15221), (2139, 13257), (2511, 11293), (4419, 6417)]