20598440

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3931}}^1$

素因数の和:4073

約数の個数: 32

約数和(自身を含む): 46712160

約数和(自身を除く): 26113720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3931, 5240, 7862, 15724, 19655, 31448, 39310, 78620, 157240, 514961, 1029922, 2059844, 2574805, 4119688, 5149610, 10299220, 20598440]

約数ペア:

[(1, 20598440), (2, 10299220), (4, 5149610), (5, 4119688), (8, 2574805), (10, 2059844), (20, 1029922), (40, 514961), (131, 157240), (262, 78620), (524, 39310), (655, 31448), (1048, 19655), (1310, 15724), (2620, 7862), (3931, 5240)]