18985208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{487}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 39000960

約数和(自身を除く): 20015752

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 443, 487, 886, 974, 1772, 1948, 3544, 3896, 4873, 5357, 9746, 10714, 19492, 21428, 38984, 42856, 215741, 431482, 862964, 1725928, 2373151, 4746302, 9492604, 18985208]

約数ペア:

[(1, 18985208), (2, 9492604), (4, 4746302), (8, 2373151), (11, 1725928), (22, 862964), (44, 431482), (88, 215741), (443, 42856), (487, 38984), (886, 21428), (974, 19492), (1772, 10714), (1948, 9746), (3544, 5357), (3896, 4873)]