20987480

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8893}}^1$

素因数の和:8963

約数の個数: 32

約数和(自身を含む): 48027600

約数和(自身を除く): 27040120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8893, 17786, 35572, 44465, 71144, 88930, 177860, 355720, 524687, 1049374, 2098748, 2623435, 4197496, 5246870, 10493740, 20987480]

約数ペア:

[(1, 20987480), (2, 10493740), (4, 5246870), (5, 4197496), (8, 2623435), (10, 2098748), (20, 1049374), (40, 524687), (59, 355720), (118, 177860), (236, 88930), (295, 71144), (472, 44465), (590, 35572), (1180, 17786), (2360, 8893)]