31123185

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{661}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 51731328

約数和(自身を除く): 20608143

約数列:

[1, 3, 5, 15, 43, 73, 129, 215, 219, 365, 645, 661, 1095, 1983, 3139, 3305, 9417, 9915, 15695, 28423, 47085, 48253, 85269, 142115, 144759, 241265, 426345, 723795, 2074879, 6224637, 10374395, 31123185]

約数ペア:

[(1, 31123185), (3, 10374395), (5, 6224637), (15, 2074879), (43, 723795), (73, 426345), (129, 241265), (215, 144759), (219, 142115), (365, 85269), (645, 48253), (661, 47085), (1095, 28423), (1983, 15695), (3139, 9915), (3305, 9417)]