18513968

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:234

約数の個数: 60

約数和(自身を含む): 40273464

約数和(自身を除く): 21759496

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 73, 88, 121, 131, 146, 176, 242, 262, 292, 484, 524, 584, 803, 968, 1048, 1168, 1441, 1606, 1936, 2096, 2882, 3212, 5764, 6424, 8833, 9563, 11528, 12848, 15851, 17666, 19126, 23056, 31702, 35332, 38252, 63404, 70664, 76504, 105193, 126808, 141328, 153008, 210386, 253616, 420772, 841544, 1157123, 1683088, 2314246, 4628492, 9256984, 18513968]

約数ペア:

[(1, 18513968), (2, 9256984), (4, 4628492), (8, 2314246), (11, 1683088), (16, 1157123), (22, 841544), (44, 420772), (73, 253616), (88, 210386), (121, 153008), (131, 141328), (146, 126808), (176, 105193), (242, 76504), (262, 70664), (292, 63404), (484, 38252), (524, 35332), (584, 31702), (803, 23056), (968, 19126), (1048, 17666), (1168, 15851), (1441, 12848), (1606, 11528), (1936, 9563), (2096, 8833), (2882, 6424), (3212, 5764)]