20339955

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{163}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 36840960

約数和(自身を除く): 16501005

約数列:

[1, 3, 5, 9, 15, 45, 47, 59, 141, 163, 177, 235, 295, 423, 489, 531, 705, 815, 885, 1467, 2115, 2445, 2655, 2773, 7335, 7661, 8319, 9617, 13865, 22983, 24957, 28851, 38305, 41595, 48085, 68949, 86553, 114915, 124785, 144255, 344745, 432765, 451999, 1355997, 2259995, 4067991, 6779985, 20339955]

約数ペア:

[(1, 20339955), (3, 6779985), (5, 4067991), (9, 2259995), (15, 1355997), (45, 451999), (47, 432765), (59, 344745), (141, 144255), (163, 124785), (177, 114915), (235, 86553), (295, 68949), (423, 48085), (489, 41595), (531, 38305), (705, 28851), (815, 24957), (885, 22983), (1467, 13865), (2115, 9617), (2445, 8319), (2655, 7661), (2773, 7335)]