515580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 1557024

約数和(自身を除く): 1041444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 661, 780, 1322, 1983, 2644, 3305, 3966, 6610, 7932, 8593, 9915, 13220, 17186, 19830, 25779, 34372, 39660, 42965, 51558, 85930, 103116, 128895, 171860, 257790, 515580]

約数ペア:

[(1, 515580), (2, 257790), (3, 171860), (4, 128895), (5, 103116), (6, 85930), (10, 51558), (12, 42965), (13, 39660), (15, 34372), (20, 25779), (26, 19830), (30, 17186), (39, 13220), (52, 9915), (60, 8593), (65, 7932), (78, 6610), (130, 3966), (156, 3305), (195, 2644), (260, 1983), (390, 1322), (661, 780)]