20408985

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{7687}}^1$

素因数の和:7757

約数の個数: 24

約数和(自身を含む): 35979840

約数和(自身を除く): 15570855

約数列:

[1, 3, 5, 9, 15, 45, 59, 177, 295, 531, 885, 2655, 7687, 23061, 38435, 69183, 115305, 345915, 453533, 1360599, 2267665, 4081797, 6802995, 20408985]

約数ペア:

[(1, 20408985), (3, 6802995), (5, 4081797), (9, 2267665), (15, 1360599), (45, 453533), (59, 345915), (177, 115305), (295, 69183), (531, 38435), (885, 23061), (2655, 7687)]