20123946

素因数分解:

$2^1\times 3^2\times {\mathrm{157}}^1\times {\mathrm{7121}}^1$

素因数の和:7286

約数の個数: 24

約数和(自身を含む): 43885764

約数和(自身を除く): 23761818

約数列:

[1, 2, 3, 6, 9, 18, 157, 314, 471, 942, 1413, 2826, 7121, 14242, 21363, 42726, 64089, 128178, 1117997, 2235994, 3353991, 6707982, 10061973, 20123946]

約数ペア:

[(1, 20123946), (2, 10061973), (3, 6707982), (6, 3353991), (9, 2235994), (18, 1117997), (157, 128178), (314, 64089), (471, 42726), (942, 21363), (1413, 14242), (2826, 7121)]