20631760

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8893}}^1$

素因数の和:8935

約数の個数: 40

約数和(自身を含む): 49628520

約数和(自身を除く): 28996760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8893, 17786, 35572, 44465, 71144, 88930, 142288, 177860, 257897, 355720, 515794, 711440, 1031588, 1289485, 2063176, 2578970, 4126352, 5157940, 10315880, 20631760]

約数ペア:

[(1, 20631760), (2, 10315880), (4, 5157940), (5, 4126352), (8, 2578970), (10, 2063176), (16, 1289485), (20, 1031588), (29, 711440), (40, 515794), (58, 355720), (80, 257897), (116, 177860), (145, 142288), (232, 88930), (290, 71144), (464, 44465), (580, 35572), (1160, 17786), (2320, 8893)]